Search results for: ""revi'is""

Volume/Liquid
1 Revi'it = Usually 3.3 fl. oz. (99 ml); but 4 fl. oz. (119 ml) for:
  • Any food requiring bracha achrona.
  • The four cups of wine at the seder.
  • Kiddush for Shabbat and Jewish festival nights.
 
1 Log = Volume of 6 eggs = 4 Revi'ot (a revi'it is 1/4 of a log)  
1 Kab = 4 Login  
1 Se'ah = 6 Kabin
 
40 Se'ah = Volume equivalent to 3 cubes, 24 ½” (61 cm) on each side; minimum requirement for mikva = about 192 gallons/750 liters  

1 fl. oz. = 1.77 cu. inch (about the size of a golf ball)
Pour Revi'it for Shabbat Kiddush
As on Jewish festivals, the minimum volume of kiddush beverage on which you may say Shabbat kiddush (or havdala) is a revi'it, as follows:
  • 4 fl. oz. (119 ml) for d'oraita cases such as Shabbat (or first-day Jewish festival) evening kiddush, and
  • 3.3 fl. oz. (99 ml) for d'rabanan cases such as kiddush for Shabbat lunch.
Jewish Festivals: Kiddush: Pour Revi'it
As on Shabbat, the minimum volume of kiddush beverage on which you may say Jewish festival kiddush (or havdala) is a revi'it:
  • 4 fl. oz. (119 ml) for d'oraita cases such as the first night of Jewish festivals (or Shabbat evening) kiddush, and
  • 3.3 fl. oz. (99 ml) for d'rabanan cases such Jewish festival lunch and evening/daytime meals on the second Jewish festival day (as well as kiddush for Shabbat lunch).
How To Fill the Havdala Cup
For havdala, pour at least a revi'it (4 fl. oz., or 119 ml) for enough wine (or other beverage being used) to overfill the cup. This is a non-binding custom, not a halacha.
Reason Doing so is a symbol of blessing (siman bracha) that we are so rich that the wine or other drink that we spill is not important. Don't overfill your cup if you are using wine from a shmita year!
 
Jewish Festivals: Ending: Havdala: Filling the Cup
You must pour at least 4 fl. oz. (119 ml--a revi'it) of wine or other beverage into the havdala cup--this is halacha.  However, to symbolize that we are blessed (siman bracha) with wealth, overfill the cup (non-binding custom).
Note Do not drink the overflow, to show that we are so rich that we do not need the spilled beverage.
Note Do not overfill a cup containing shmita wine!
Al HaGafen: Drinking Enough Wine/Grape Juice To Say After-Blessing
Say al ha'gafen after drinking at least a revi'it (3.3 fl. oz., or 99 ml) of wine (or grape juice) within 30 seconds.
Minimum Amount of Water To Remove Tum'a
The minimum amount of water to remove tum'a (ritual impurity) is 3.3 fl. oz. (99 ml, or 1 revi'it) total, for both hands.
Note By starting with at least one revi'it per hand when washing, we avoid problems of transferring tum'a to other people or utensils. If you start with only one revi'it and pour enough to cover each hand from that single revi'it, you will remove the tum'a from your hands, but the water that remains on your hands will still be tamei. If you then touch a washing cup, the tamei water will remain on the cup and be transferred to the person who touches it next. It is recommended to use at least one revi'it per hand to avoid such problems.
Tum'a and From What To Pour
When washing your hands using the One-Time Method, in all cases except when washing for bread, here is what to use:
  • Best: Cup that holds at least a revi'it of water.
  • Next Best: Wash hands from a spigot within 12” of the ground, turning the spigot off and on between hands.
  • Third Choice: If the spigot is more than 12” above the ground, simply hold your hands under a regular faucet in the flow of water so that your hands get wet all over.  No need to turn the water on and off.
    Note This is a b'di'avad case. 
  • Fourth Choice: If there is no water, say whatever blessings you need to say anyway (for example, asher yatzar) rather than not saying the blessing at all. You will still have the tum'a on your hands (but you should rub your hands on cloth of clothing first).
Note This does NOT apply to washing before eating bread or to any cases where you must wash using the Three-Times Method. Removing tum'a in these cases requires a cup.
Note If you need to wash your hands after using the toilet, there is no need to go 18 minutes to find the water, (unlike the requirement for washing for bread).
Tum'a and Drying Hands before Handwashing
To wash hands from tum'a or all other purposes, you do not need to dry your hands first--except before washing for bread, and then ONLY if the person who washed hands before you:
  • Did not use a revi'it of water (per hand) to wash his/her hands, AND
  • Only poured once on each hand.
In sum, you almost never need to dry your hands before washing them!

However, if the person before you had tum'a on his or her hands and poured only once, the tum'a will be transferred from his/her hands to the cup. 
Jewish Festivals: Ending: Havdala: How Much To Drink
To fulfill the commandment of havdala (or kiddush), the person making kiddush must drink at least 2 fl. oz. (59 ml) within 30 seconds from the kiddush cup. However, drinking at least 4 fl. oz. (119 ml--a revi'it) from the havdala cup within 30 seconds allows you to say bracha achrona.  
 
How To Wash Hands the One-Time Method
To wash hands the One-Time Method:
  • Fill the washing cup with at least 3.3 fl. oz. (99 ml) of water.
  • Pour enough water (may be as little as 1.3 fl. oz.--39 ml, or 1/6 cup) from the washing cup to completely cover your entire first hand (either hand may be first but it is proper to wash your right hand first).
  • Pour enough water to completely cover the second hand.
Note You do not need to pour any more than that or to break up the revi'it into two pours.
How To Wash Your Hands for Rachtza
To wash hands for rachtza:
  • Fill the washing cup with at least 3.3 fl. oz. (99 ml) of water.
  • Pour enough water (may be as little as 1.3 fl. oz.--39 ml, or 1/6 cup) from the washing cup to completely cover your entire first hand (either hand may be first, but it is the custom to wash your right hand first).
  • Pour enough water to completely cover the second hand.
You do not need to pour more than once per hand and you do not need to break up the revi'it into more than one pour for each hand.