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Shabbat: Kos Pagum
Do not use a kos pagum for kiddush. Kos pagum means either:
  • “Physically damaged or broken drinking utensil":   (You may not use such a cup for kiddush l'chatchila), OR
  • Cup of wine, grape juice, or any beverage that has been drunk from. 
This beverage may not be used for a kos shel bracha until at least a small amount more of some beverage has been added to the existing beverage.
Tefilin: Replacing: Tefilin You Had To Take Off or That Fell Off
If you take off your tefilin because you have to, such as to go to the bathroom, or if one or both of the tefilin fall or slide off your arm or head, say: 
  • Both blessings again when you replace the head tefila (tefila shel rosh) on your head.
  • Only the first blessing when replacing the arm tefila (tefila shel yad) on your arm.
  • Each blessing in its correct place if you took off both.
Reason We say the blessing again for tefilin that fell off because there was discontinuity in thought (hesech da'at) when they fell off.
Note If you took the tefilin off between bar'chu and the end of amida and replaced them without saying the blessings:
  • Wait until after you have finished the amida, and then
  • Move each of the tefilin slightly, first the arm tefila and then the head tefila, and
  • Say the appropriate blessings.

When To Say Psalm 27/L'David Adonai Ori V'Yish'i
Begin saying L'David Adonai ori v'yish'i (Psalm 27) on the first day (at night) of Elul, not the first day of Rosh Chodesh Elul (the 30th of Av). The last day to say this Psalm is 22nd of Tishrei (Shmini Atzeret). This Psalm is recited twice daily, in shacharit after shir shel yom and in ma'ariv after alenu, including on Shabbat and Jewish festivals.
Attire: Sha'atnez: Sheep Wool with Linen
You may not wear clothing made by combing/felting, spinning, and/or twisting/weaving lamb's or sheep's wool with linen. You may also not wear a garment made of two pieces—one wool and one linen—that have been sewn together. Even one thread of wool or linen with the other material is forbidden (there is not batel in 1/60th for sha'atnez).
Note The acronym sha'atnez stands for shu'a, tuvi, nuz—three steps in processing wool and linen fibers.
Chanuka Candles: Light Left to Right; Add Right to Left
Light Chanuka candles from left to right, as you face it, not as it will be seen from outside the window. Add the new candle from right to left.  For example, on the first night, put the candle on the extreme right of the menora.
To set up and light Chanuka candles:
  • Set up the candles starting from the right side of the menora.
  • Light the shamash candle and hold it while you say the blessings:
    • Lehadlik ner shel Chanuka.
    • She'asa nisim l'avoteinu ba'yamim ha'heim ba'zman ha'zeh.
    • (And on the first night, add) She'hecheyanu.
  • Light the left-most candle first and proceed to the next candle on the right, and so on.
  • Once you have lit the first candle each night, say ha'neirot hallalu (this is a halacha).
Note Once the menora has been lit, you may not turn or move it, even to the window.
Note Saying Ma'oz Tzur is a widespread custom but is not required.
Procedure for Separating Terumot and Ma'asrot
(from kashrus/kk-medi-terumos.htm">http://www.star-k.org/kashrus/kk-medi-terumos.htm, used with permission)

Post this document in a conspicuous place.
Note The coin you are using for the separation must be in front of you (for the ma'aser sheini).
  1. Break or cut off more than one hundredth of the food and set it aside (for teruma and terumat ma'aser).
  2. Say the following (either in Hebrew or English):



    Yoteir me'echad me'me'a she'yeish kahn harei hu teruma gedola be'tzad tzefono. Oto echad me'me'a she'yeish kahn ve'od tish'a chalakim k'moto be'tzad tzefono shel ha'peirot harei hu ma'aser rishon. Oto echad me'me'a she'asitiv ma'aser rishon asuy terumat ma'aser, uma'aser sheini b'dromo, u'mechulal hu ve'chumsho al peruta be'matbei'a sh'yichidita lechilul ma'aser sheini ve'revai. Ve'im tzarich ma'aser ani ye'hei ma'aser ani bi'dromo. Im hu revai ye'hei mechulal hu ve'chumsho al peruta be'matbei'a she'yichidita le'chilul ma'aser sheini ve'revai.

    (Im ma'aser minim harbei tzarich le'hosif) “kol min al mino.”


    Translation
    (If there is a food of one type that requires separation) Whatever is MORE than one hundredth of this food shall be teruma on the north side of the piece that I have set aside. The one hundredth that is left in the piece I have set aside plus nine other pieces the same size on the north side of the food shall be ma'aser rishon. That same one hundredth in the piece I set aside that I have made ma'aser shall be terumat ma'aser.
    Furthermore, I am proclaiming ma'aser sheini to be in effect on the south side of the food, and I am redeeming it and its fifth on a pruta (smallest amount of money recognized by the Torah for most purposes) of this coin which I have in front of me. If this food needs ma'aser ani, the ma'aser ani shall take effect on the south side of the food.
    If this food is subject to the laws of neta revai then it and its fifth shall be redeemed on a pruta of this coin that I have in front of me.

    If there is a food of more than one type, add each type of food for its type.
     
  3. Wrap the broken or cut-off piece in plastic and discard.
  4. The coin--dime or coin of greater value--must eventually be disposed of in such a manner that it will not be used.
  5. The food may now be eaten.
 
If you do not want to say the long version, you may say this shorter version, after having separated a piece larger than 1\% of the total food:
All separations and redemptions shall take effect as is specified in this Star-K document outlining the Procedure for Separating Terumot and Ma'asrot, Tithes and Redemptions, which I have in my possession.

Whether saying the long or short version, only a little over one hundredth of the food will not be permitted to eat; all the rest may be eaten. Even though the tithes constitute over one fifth of the food, one is permitted to eat most of the tithes oneself, even though he may not be a Cohen or a Levi. Under no circumstances will it suffice merely to break off a piece of the food and throw it away. The aforementioned instructions must be strictly followed. The laws of the tithes apply to everyone, including the Cohen and Levi.

IMPORTANT
You must say the blessing lehafrish trumot u'ma'asrot if you know the produce definitely needed to have teruma and ma'aser taken; it was definitely:
  • Grown on Jewish-owned land in halachic Eretz Yisrael and
  • Had not yet had teruma and ma'aser taken from it.
BUT you must not say the blessing if the produce might have:
  • Not been grown on Jewish-owned land in halachic Eretz Yisrael, OR
  • Already had teruma and ma'aser separated.
Note The State of Israel is not the same as halachic Eretz Yisrael (that area of Eretz Yisrael owned or conquered by Jews during the Second Temple period). 
Goal of Creation
Shabbat was the goal of Creation. Just as God completed the world's creation on the sixth day and ceased His work on the seventh, so Jews are supposed to imitate God and not do any creative work on the seventh day. Everything we need for living through Shabbat must be prepared ahead so that we do not do any creative activities on Shabbat.
Our observance of Shabbat thus testifies that God created the world. In the Shabbat kiddush, we mention the Exodus from Egypt, too, to testify to the world that God is continuously involved in our lives.
By ceasing our normal efforts to dominate the physical world, we can appreciate the spiritual aspects of our existence.
On Shabbat, all observant (shomer Shabbat) Jews receive an extra “soul.”

Zachor and Shamor

Remember (Zachor) the Sabbath day to make it holyExodus/Shmot 20:8
Observe (Shamor) the Sabbath day to make it holyDeuteronomy/Devarim 5:12
Shabbat has two dimensions:
  • Zachor  “Remember,” encompassing positive (“to do”) commandments, and
  • Shamor  “Observe,” encompassing negative (“refrain from”) commandments.
Note Women, who are normally exempt from positive, time-dependent commandments, must do both positive and negative Shabbat commandments since, according to tradition, God said both words simultaneously. This is unlike Jewish festivals, when women are often exempt from positive, time-dependent commandments.

Zachor:  Positive Shabbat Commandments
What Are Positive Shabbat Commandments
Positive Shabbat commandments include:
  • Lighting candles,
  • Making kiddush evening and morning,
  • Making havdala,
  • Honoring Shabbat (Kivod Shabbat), and
  • Enjoying Shabbat (Oneg Shabbat), including eating three meals on Shabbat.
Honoring Shabbat: Special Food and Clothes
Honoring Shabbat includes eating tasty food and wearing nice clothes.

Shamor: Negative Shabbat Commandments
Shabbat Laws from the Torah (Shabbat D'Oraita)
What Are Melachot
On the Jewish day of rest, we refrain from 39 creative activities (melachot) that had been used to build the Tabernacle in the wilderness. These 39 melachot, prohibited by the Torah, are listed in the mishna of Shabbat and in later halacha books.

The word melacha is frequently mistranslated as “work,” but work has nothing to do with the Jewish concept of melacha. Some melachot are physically strenuous (plowing, grinding wheat, skinning an animal) and some are easy to do (drawing, baking). The defining point is whether the activity is one of the 39 creative, value-adding labors. Emptying your pockets before leaving an eruv (so you are not “carrying”) may seem confusing to someone who thinks that resting on Shabbat means refraining only from hard physical labor!

What Are Toldot
Toldot are variations of the 39 melachot. These types of melacha are also prohibited by the Torah.

Intention and Other Considerations
Most Torah (d'oraita) prohibitions of melacha on Shabbat are for cases in which you:
            1) Intend a permanent change.
                Often, actions that may be forbidden when they cause permanent change, will
                be permissible by Torah law if the result is only temporary. Or
            2) Intend or act for a specific purpose.
                Random or unintended actions are generally not prohibited by Torah law.
                (However, actions that are not prohibited by the Torah, may be prohibited
                by Chazal.)

Whether you may benefit from a melacha done on Shabbat depends on intention:
  • A Jew who intentionally does a melacha on Shabbat may never benefit from that melacha.
            Note Any other Jew may benefit from that melacha as soon as Shabbat is over.
  • A Jew who does melacha on Shabbat by mistake (shogeg) may benefit from that melacha immediately after Shabbat ends.
In order to violate a prohibited melacha d'oraita, the melacha must be done as follows. If any of these do not apply, then the melacha is forbidden d'rabanan but not d'oraita:
  • K'darko--The action must be done in a normal way.
  • Tzorech tikun—The action must be done for a constructive purpose.
  • Tzricha l'gufa--You must need the normal result of that action.
  • Asiya b'yachid—The action must be done by one individual (if commonly done by just one person).
  • Mit'aseik--You must realize that you are doing a melacha.
 
Shabbat Laws from Chazal (Shabbat D'Rabanan)
Chazal instituted additional restrictions, such as:
  • Activities that might lead directly to violating a Torah prohibition.
  • Use of items not designated for Shabbat use (muktza). For a good explanation of muktza from the TorahTots website, please click here.
  • Activities that might lead one to think that a prohibited activity is permissible (mar'it ayin--the appearance of the eye).
  • Activities that are not appropriate for Shabbat, even though they are technically permissible according to the Torah (“uvda d'chol”).
  • Tircha--Exerting a physical effort to accomplish a result that is not required for Shabbat.

Enjoying Shabbat/Oneg Shabbat
Chazal instituted laws to engender a positive Shabbat atmosphere and experience.  Beyond the actual halachot of shamor and zachor, we have a concept of enjoying Shabbat (oneg Shabbat)—of enhancing our experience of Shabbat by doing whatever each person finds to be enjoyable and relaxing--as long as it is neither destructive nor violates the laws of Shabbat. The criteria are subjective. To fulfill the idea of honoring Shabbat, do things you would not do just for yourself if it were not Shabbat. Take essential life activities such as eating and sleeping and do them more and better and make them especially enjoyable.

Meals as Oneg
On Shabbat, we eat better foods and more types of food than we would normally do on weekdays.
The main idea behind meals for Shabbat is enjoyment (oneg; by contrast, the main idea for Jewish festivals is joy--simcha), so on Shabbat you should eat bread and either fish, poultry, or meat (but only if you enjoy them).
In order to have a special appetite for our Shabbat evening meal, we don't eat a full meal with bread on Friday afternoon.

Special Shabbat Songs (Zmirot)
Special songs (zmirot) are sung at the various Shabbat meals. Some zmirot have an aspect of prayer to them.

Studying Torah
Studying Torah on Shabbat is another way of increasing our spiritual experience. It honors the Shabbat and should bring about enjoyment of Shabbat.

Shabbat and Muktza
For information on Shabbat and muktza, see section below, Shabbat: Muktza.

Weekday Talk
Don't talk about subjects that are forbidden to do on Shabbat (weekday subjects); for example, don't talk about what you will do after Shabbat is over. There is no prohibition about discussing actions from the past as long as no planning is discussed.

When To Pray: Traveler's Questions: Crossing from Day-Night or Night-Day
Always say the prayer service based on the day and time where you are at the moment you are ready to pray.
 
Flying West
Situation
You fly west and take off before sunrise.
What To Do
If the sun will rise while you are flying, you may say shacharit from the time of alot ha'shachar on the ground below where you are when you begin to pray.
 
Situation
You fly west, taking off during the daytime.
What To Do
Say mincha whenever the sun has gone at least 30 minutes past the local midday where you are at that time.
 
Situation
You fly west into the night.
What To Do
Say ma'ariv. once it is night on the ground below you.
Note On a long west-bound flight, you might not have to say any prayer services, since you might still be covered by whatever prayer service you said before you took off.
 
Flying East
Situation
You cross the international dateline passing through the night and are now back in the day you already experienced.
What To Do
You ignore the fact that you said the prayer service on that day and say it again.
 
Situation
You fly from Australia on Tuesday, departing during the daytime. You will fly into the night of Monday and continue on back into Tuesday.
What To Do
You disregard the fact that you already said ma'ariv for Monday and you say ma'ariv again. If your flight continues until sunrise, you will also say shacharit for Tuesday again.
 
Situation
You fly from Australia on Tuesday morning and cross the IDL during the daytime of Tuesday and are now back into Monday.
What To Do
You do not say any prayer service until your flight crosses into night, whether that happens in flight or after you have landed. You will need to say mincha at some time during the day.
 
Situation
You fly east but you do not cross the international dateline.
What To Do
If you cross into the night, you will say ma'ariv as you normally would do. If you took off at night and cross into daytime, you will say shacharit.
Note When flying east from night into day, there is a very brief time period when you may say shema of the morning, since you may not say shema until alot ha'shachar and must say shema by the end of the third hour of the local day. When flying east, instead of having about 4 hours during which to say shema, you might only have two or so hours.
Note Regarding saying the shir shel yom (psalm for the day of the week), follow the local day.
Four Most Common Nida Questions
 
  1. What Makes a Woman a Nida
 
Introduction to What Makes a Woman a Nida
Vaginal Blood Flow
Only vaginal blood flow makes a woman nida
 
Nida D'Oraita
According to Torah law (d'oraita), a woman becomes a nida when she experiences a flow of uterine blood, preceded or accompanied by a hargasha. Because uterine blood flow is difficult to distinguish from the more general vaginal blood flow, we assume that a vaginal blood flow is from the uterus--unless a medical person (it could be a midwife) determines that the blood flow is not uterine.
 
Nida D'Rabanan
 
By rabbinic law (d'rabanan), a woman can become a nida even with only a qualifying stain (see below).

Hargasha
A hargasha is anything that signals that the woman's period is imminent. There are three classical hargashot, as well as possible hargashot that pertain only to an individual woman.
Note Many women today do not have hargashot.
 
Classical Hargashot
There are three classical hargashot:
1) Body Tremor
2) Petichat HaMakor
Some women, at petichat ha'makor (“opening of the uterus”), have a sensation of release similar to when one's bladder opens to urinate.
3) Zivat Davar Lach
Sensation of wet discharge that comes only with her period; this is not the wet discharge that every woman normally feels multiple times daily.
Note She does not necessarily need to feel it coming from her cervix in order for it to make her a nida.
 
Individual Hargashot
What Is an Individual Hargasha
The individual hargasha can be any physiological occurrence (pimples on her face, a bout of yawning, a bloated feeling in the belly, etc.) that correlates with a woman's getting her period within 24 hours. To become established as a hargasha, it must have happened three times in a row.
 
Note Cramps for most women may be a hargasha, since they may mean that the woman is about to have her period.
 
When a woman has a hargasha, we assume that her period has started, and she should immediately stop what she is doing and check internally with a bedika cloth. If she does a bedika as soon as possible and the cloth shows a forbidden color, or shows no discharge at all, she immediately becomes nida for at least 12 days, after which she goes to the mikva
Note If she had a hargasha and finds no blood and no discharge, she becomes a nida, since we assume there was blood and she just didn't find it.  If the bedika cloth shows brown, magenta, salmon, brick, amber, orange, etc., the rabbi will want to see the cloth to determine her status.
Note Most medium browns are OK.
 
What To Do If Not Sure
If she is not sure she has had a hargasha, she asks a rabbi and together they will sort out the answer.
 
 
Nida D'Rabanan
 
Stain (without Hargasha)
 
Stain Colors
A rabbi should be consulted in all matters of questionable colors of stains.  Some may seem to you to be forbidden but turn out to be permissible, and vice versa.
 
Stain Location
A stain of a color that could make a woman a nida can be on material or on the woman's body. None of the following lenient conditions apply if the woman is nida d'oraita:
 
Stains on Material
A stain on material must conceivably have been in contact with the lower regions of her body (nightgown, sheet, towel, etc.). A stain on material makes the woman a nida only if ALL FOUR following conditions apply:
1. Stain Is on White Material.
2. Stain Is on Material that Can Become Impure (mikabel tum'a)—natural materials such as cotton or silk.
Note A combination of polyester and cotton counts as cotton.
3. Stain Is at least Size of Gris/US penny.
Note A bunch of disconnected stains will not be a problem as long as no one of them is at least a gris on its own.
4. Stain Is Not Positively Attributable to Another Cause (such as hemorrhoids).
Note If the woman finds a stain (even during or after the seven clean days), even if it is more than the size of a gris, she is OK if the material is not white OR is not mikabel tum'a. However, it the stain is larger than half of a US dollar bill, she should consult a rabbi.
If she had a hargasha before she found the stain, none of these leniencies apply.
 
Stains on Woman's Body
If a woman finds a stain on the lower regions of her body, it will make her a nida if it is:
  1. Not positively attributable to another cause, AND
  2. At least the size of a gris. For small, unconnected spots, she must evaluate whether, together, they equal the size of a gris (on material, the spots DO NOT get combined). If yes, she should consult a rabbi.
 
 
II. HARCHAKOT: How Do the Couple Conduct Themselves while the Wife is a Nida?
 
According to Torah law, when a woman is a nida, she and her husband are prohibited not only from having intercourse, but also (“lo tikrav”—Vayikra 18:19) from having any physical contact of a passionate or romantic nature (negiya shel chibuk v'nishuk)--those patterns of physical contact that often lead to intercourse. Since the penalty for violation is kareit, husband and wife should live separately during the nida period, but because we don't, we use “distancers” (harchakot) as reminders of distance while living together in the same home. The harchakot sensitize us to the smallest gestures of love. The couple who know that in a finite amount of time their union will not only be permitted, but even be davar sh'bekedusha--a thing of sanctity--will have the willpower to wait it out.
 
These harchakot are applied during the nida period:
 
General Harchakot
S'chok v'Kalut Rosh In general, avoid fun activities which could lead to lightheadedness)
 
Negiya Afilu b'Etzba Ketana Avoid any physical contact, even if not romantic.
 
The Bedroom
Mita Achat ("Single Bed") Do not share one bed. You must have two separate beds, but there is no standard for how far apart the separate mattresses and linens should be, except that they must be more than 1 tefach (3.5 inches) apart from each other. If there is one headboard, one bed should be moved away from the headboard.
 
L'Hatzia Mitato b'Fanav The wife may not, in front of her husband, prepare his bed for sleeping (as opposed to the chore of making the beds in the morning).
 
Sitting on the Bed The husband may not sit or lie on wife's bed unless she is out of town; the wife may not lie on her husband's bed in his presence.
 
Wining and Dining
K'ara Achat ("Single Plate") Husband and wife may not share a plate as they eat. A husband may not eat of his wife's leftovers unless someone else ate from it in between, it was transferred to another plate, or she has left the table for the duration of the meal.  
 
Shulchan Echad ("Single Table") You may not eat at the same table unless you put an item between yourselves that is not normally on the table. Reminders (heker) can be napkin rings, a flower, a food item known not to be part of the meal, etc. Special placemats are also acceptable reminders.
Note If other people are sharing the meal with you, you do not need a reminder.
 
Hagashat Ochel Li'Fanav ("Serving Food in Front of Him") The wife may not directly serve her husband food except in an altered way.
Example
The wife may put the plate to the side of her husband instead of in front of him.
 
Mezigat HaKos Bi'Fanav The husband may not pour his wife a cup of any drink in front of her. The wife may not pour her husband a cup of any drink in front of him.
 
Lishlo'ach La Kos Bracha The husband may not even send or pass a cup of wine to his wife, even by someone else and even if she is in a different room. After the husband makes kiddush, havdala, or sheva brachot, he puts the wine down in front of himself and then his wife may take the cup and drink. If there are other people present, the husband may pour wine into several cups and one of them may be passed to his wife (since no specific cup was designated for his wife).
 
Individual Harchakot
Histaklut b'Mkomot HaMechusim The man may not gaze appreciatively at those parts of the woman's body that are normally covered.
 
Hoshata M'Yad L'Yad ("Passing from Hand to Hand") The couple may not pass things by hand to each other.
 
Zerika MiYad L'Yad The husband or wife may not throw something for the other to catch.
 
Safsal Mitnaded  The couple may not sit on any surface that is not firmly attached to the ground and in which the movement of one person causes the other person to move.
 
Tiyul baSfina O Agala: The couple may not take a pleasure (destination-less) trip on a boat or wagon. However, if they have a destination, it is OK.
 
Perfume The husband may not intentionally smell his wife's perfume (even if she is not wearing it!).
 
Yitzikat V'Hava'at Mayim V'Richitzat Panav, Yadav, V'Raglav Except for mitzvot, the wife may not draw or bring water to wash his hand, face, or feet or draw his bath for him.
 
Illness The wife may do what the husband needs if he is sick. If the wife is sick, the husband may only help her in cases of substantial need.
 
III. Tahara after Nida:
The Five Steps of Purification
 
1. Minimum Duration of Nida
A woman will be a nida even if she saw blood on only one day. But she must wait until the fifth day before she may begin counting her seven clean days (in unusual circumstances, she MAY be permitted to reduce the 5 initial day count--consult a rabbi).
Note In counting nida (bleeding) days (as opposed to clean days), part of a day counts as a full day. 
Example If the bleeding starts at 2p on Wednesday, the woman counts from 2p until sundown as Day 1. Thursday is Day 2, etc. Sunday before sundown, she may do the first bedika
 
2.  Hefsek Tahara
On the fifth day (or whenever--after the fifth day--the bleeding and staining seems to be ending), she does a hefsek tahara to check very carefully internally to make sure all the bleeding and staining is over. The hefsek tahara has three parts:
  1. Wash or cleanse lower regions of the body.
  2. Do an internal check/bedika: Insert a white cloth into vagina and circle it around to make sure to get every nook and cranny.
  3. Moch dachuk: Insert a bedika cloth within two halachic hours of sunset and leave it in until after dark.
Reason The seven clean days must be complete days.  Since we don't know exactly what time the first day begins, the cloth is inserted before sunset of the first “clean” day.
Note If doing this causes any problem for her, she should consult a rabbi.
 
3.  Count of Seven Clean Days with Three Components
  1. Bedika
The woman must have seven complete consecutive halachic days free of any impure discharge (generally means bleeding). She should make an internal examination each day when she gets up, and another before sunset. If this regimen will cause her problems, she should consult a rabbi.
 
  1. White Underpants
During the seven clean days, the woman must wear white underpants. But if she wears tight-fitting underpants, as in contemporary clothing, only the part under the vaginal area must be white.
Note If the woman has any bleeding during or after the seven clean days, she should consult a rabbi.  
 
  1. No Hesech Da'at
A woman does not need to think about the seven clean days all of the time, but she must keep in mind, during the entire nida purification process, that she is not in an active nida state.  
Situation A woman found a stain and asked a rabbi about it. She assumed she was definitely nida.
What To Do Once she assumes that she has become a nida during that seven-day period, she must begin her count again--even once she has found out that she was not, in fact, a nida
Note If she asked the rabbi while not yet assuming that she was definitely a nida, she may continue her original count after the rabbi determines that she was not a nida.

4.  Chafifa
Chafifa General Rules
The woman must do total body cleansing, particularly the hairy areas, to make sure there is no intervening substance (chatzitza). Anything that is not part of the body, and which can be fairly easily removed, should be removed before immersing in a mikva.
Reason In order for a woman to become tehora, she needs to be totally immersed in the mikva all at one time, with no chatzitza between her and the mikva waters.
There are three definitions of chatzitza:
a.   D'Oraita
According to Torah law, something is only a chatzitza if it is “ruba v'makpida”—something that covers the body AND bothers the woman. Very few chatzitzot are in this category; here are some:
  • Full body cast.
  • Being covered with sand.
  • Being sweaty from head to toe.
b.   D'Rabanan
Chazal said a chatzitza is something that covers the body OR bothers the woman. 
Examples
  • Moisturizer that covers most of her body.
  • Adhesive that is left on her skin after a band-aid has been removed.
  • Imperfect manicure, if she would not go to an interview like that.
c.    Nashim Nahagu
Nashim Nahagu means a practice that women took upon themselves: Everything that a woman can easily get off, she tries to get off--even if it covers only a small part of the body and it does not bother her at all. This is a custom (minhag) that later became a d'rabanan halacha.
Note In cases in which this type of halacha generates a shalom bayit issue or would cause someone to avoid immersing in the mikva, consult a rabbi.
 
Chafifa: Nails, Teeth, Contact Lenses
Cutting Nails
The woman should cut her nails at least flush with the fingertips. 
Note If a woman would not want to immerse in the mikva because she doesn't want to cut her nails, ask a rabbi.
Cleaning Teeth/Removing Contact Lenses
The woman must clean her teeth and remove contact lenses even though the mikva waters do not need to contact the internal surfaces of the mouth or the eyes.
Reason While the woman is not required to open her mouth or eyes while immersing, the water must be able to make contact if she did open her mouth or eyes.

If You Forgot
If she is already home or after having relations, she found she had forgotten to take out her lenses, or she finds another chatzitza, she should ask a rabbi
 
5.  Immersion in Mikva/Tevila
Mikva: Timing
 
When To Go To Mikva
If her husband is in town, it is a mitzva to go to the mikva as soon as halachically permitted.
 
When Mikva in Unsafe Neighborhood
If the mikva is in a neighborhood that is unsafe at night, she may go during the day (she immerses on the eighth day instead of the night of the seventh night).
 
When Mikva Night Is Friday Night

Any woman whose mikva night is Friday night SHOULD make every effort to go to the mikva that night.
 
If Mikva Too Far
If mikva night is Friday night and the mikva is not within walking distance (and/or there is inclement weather), in general she may postpone going until after Shabbat is over.  Consult a rabbi about driving Friday afternoon and immersing before dark for such instances as:
  • Shalom Bayit (in this case, she is not permitted see her husband until after dark Friday night).
  • Dangerous Neighborhood.
  • Infertility Issues (if she will miss ovulation if she does not go Friday night).
 
Preparations before Friday Night
Ideally, the woman should complete her full-scale mikva preparation--including bath and shower--before Shabbat, light candles before Shabbat, walk to the mikva, immerse after dark, and then walk home.
If the mikva is within walking distance and the weather is inclement, the first-level b'di'avad is to finish preparing for Shabbat and mikva, including making a blessing on the Shabbat candles (verbally stipulating that she is not accepting Shabbat at this lighting), be driven to the mikva, and wait until her turn to immerse.
 
Mikva: How To Immerse
Kosher immersion/tevila requires simultaneous immersion of every exposed part of the body (not bet ha'starim).   Here is the best way to accomplish simultaneous immersion:
  • Enter the water until it is about 12 inches above the navel. 
  • Make sure that every part of your body is relaxed (if you squeeze anything, you create crevices and cracks that impede complete access to your skin). 
  • “Flesh”/basar is exposed to the water when standing while leaning a little forward.
  • Exhale and push yourself under the water until you are certain that all of your body and all of your hair are submerged. 
  • Once your head is above the surface of the water, say the blessing and then immerse again, the same way.

Back Home
If neither spouse wants to have marital relations, that is no problem; however, if either one wants to, the spouse is required to accommodate the interested spouse.
Exception If a spouse does not feel well (not if too tired--that is no excuse!): RMH uses this guideline: If you feel so bad that you would not go out of house to pick up $500, you are sick!
 
IV. Anticipating the Next Period/Veset
 
What To Anticipate
In anticipating the time of the month when her period is most likely to occur (onat ha'veset), a woman must determine both:
  1. The day of the month, and
  2. Whether it will begin during the daytime period (sunrise to sunset) or the nighttime period (from sunset to sunrise)
Note This period may be more or less than 12 hours!
What To Do
Once the woman has determined her onat ha'veset, she and her husband must abstain from relations during that daytime or nighttime period. If the onat ha'veset passed and the period did not come (determined by 1 or 2 bedikot during the onat ha'veset), then the husband and wife may resume a normal marital relationship until her period comes.
Note Although the halacha refers to abstaining from relations during that period, many people are stringent (machmir) to also abstain from intimate affectionate contact (negiya shel chibuk v'nishuk).  But additional prohibitions (harchakot) beyond negiya shel chibuk v'nishuk, such as passing food, sitting on a moving object that one person moves, etc., do not apply to this anticipation period.
Note Many people also abstain from relations and intimate contact during the day and night preceding the expected veset.
 
Regular and Irregular
Every woman needs to be able to anticipate her next period, whether she is a) regular or b) irregular. “Regular” is determined by any pattern to one's menstrual cycle that occurs three times in a row.
Note It is very uncommon for a woman to maintain her regular period for a long time.
 
Anticipating a Regular Period
Here are the five most classic regular patterns:
  1. Veset HaChodesh (Monthly Cycle)
Veset ha'chodesh is when the period appears in three consecutive months:
a) On the exact same Jewish-calendar date, and
b) All three times at night, or all three times during the day.
Example
A woman gets her period on these three dates:
12 Tishrei--night
12 Cheshvan—night
12 Kislev—night
 
The couple will abstain 12 Tevet—night.
Note Many people begin to abstain from the 11th during the day.
 
  1. Veset Haflaga (Intervals Cycle)
Veset haflaga is when the menstrual period appears on four consecutive occasions at three intervals of identical length apart and they are either all during the daytime or all during the nighttime.
 
  1. Veset HaGuf (Body Symptoms Cycle)
In veset ha'guf, the menstrual period comes within one day after a very specific symptom that is experienced as heralding the period, such as lower back ache, aching breasts, etc.
 
  1. Veset HaMurkav (Combination Cycle)
In veset ha'murkav, the woman is regular, three times in a row, for a Body Symptom (#3:  Veset HaGuf) in conjunction with either a Monthly Cycle (#1:  Veset HaChodesh) or an Intervals Cycle (#2:  Veset Haflaga).
Example
On the 10th of three Hebrew months in a row, a woman gets lower abdominal cramps; and on the 12th of each Hebrew month, for three months in a row, she gets her period. 
Note If she gets cramps on the 11th of the month, she does not need to separate and she may ignore those symptoms for that month. She will separate once she gets her period.  
 
5. Veset HaMa'aseh (Action Cycle)
In veset ha'ma'aseh, a particular activity has caused her period to come three months in a row.
Example
A woman goes to a sauna and that causes her period.
 
Anticipating an Irregular Period
A woman with an irregular period may have to abstain from relations and affectionate intimate contact (negiya shel chibuk v'nishuk) during these three onot/time periods:
  1. Yom HaChodesh
Same Hebrew calendar date and the same daytime or nighttime period as her prior period started (but it has not yet been three times in a row).
 
  1. Haflaga
Same interval of days between her two most recent periods, projected to the next month (daytime or nighttime period).
 
  1. Ona Beinonit
Thirtieth day after the most recent period when counting intervals.  Count from Day 1 of Period 1 through Day 1 of Period 2.
Note The 30-day interval includes both start days.
Note The 30th day, every other month, will be the same as Yom HaChodesh.