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Reference of Measurements in Halacha: Difference between revisions
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Reference of Measurements in Halacha (view source)
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# According to Rav Chaim Noeh, the Kezayit for Deoritta measures (eating Matzah) and Bracha Achrona is 25.6 cc (in volume). Nonetheless because food stuck in between one's teeth doesn't count towards a Kezayit eaten one should make sure to have 28.8 cc. Regarding a Kezayit for derabbanan measures (eating maror) the kezayit is 17.3 cc. <ref>Shiurei Torah (by Rav Chaim Noeh, Siman 3 Seif 13 pg 191) </ref> The Chazon Ish’s opinion is that the Kezayit is 33.3 grams (1.3 oz). <ref>Vezot HaBracha (pg 6) </ref> | # According to Rav Chaim Noeh, the Kezayit for Deoritta measures (eating Matzah) and Bracha Achrona is 25.6 cc (in volume). Nonetheless because food stuck in between one's teeth doesn't count towards a Kezayit eaten one should make sure to have 28.8 cc. Regarding a Kezayit for derabbanan measures (eating maror) the kezayit is 17.3 cc. <ref>Shiurei Torah (by Rav Chaim Noeh, Siman 3 Seif 13 pg 191) </ref> The Chazon Ish’s opinion is that the Kezayit is 33.3 grams (1.3 oz). <ref>Vezot HaBracha (pg 6) </ref> | ||
# The minhag of the world and many other authorities is to follow Rav Chaim Noeh’s opinion. <Ref> Vezot HaBracha (pg 6, Birur 1, pg 221) in name of Rav Elyashiv and Rav Shlomo Zalman that one may follow Rav Chaim Noeh’s opinion and there’s no need to be strict for the Chazon Ish’s opinion. Vezot HaBracha also mentions that such is the minhag of the world. </ref> | # The minhag of the world and many other authorities is to follow Rav Chaim Noeh’s opinion. <Ref> Vezot HaBracha (pg 6, Birur 1, pg 221) in name of Rav Elyashiv and Rav Shlomo Zalman that one may follow Rav Chaim Noeh’s opinion and there’s no need to be strict for the Chazon Ish’s opinion. Vezot HaBracha also mentions that such is the minhag of the world. </ref> | ||
# If one ate between a third and a half a KeBaytzah one should not make a Bracha achrona because of safek Brachot. Therefore, one should have less than a third and not make a Bracha achrona or more than a half and make a Bracha achrona. <Ref> Mishna Brurah 486:1 </ref> | |||
# On מצות Deoritta such as eating Matzah one must be strict to hold a Kezayit is a half a Kebaytzah. However, regarding מצות Derabbanan it’s preferable to hold that a kezayit is a half a kebaytzah, however, one may rely on the opinion that a kezayit is a third a kebaytzah. <Ref> Mishna Brurah 486:1 </ref> | |||
==Kedi Achilat Pras== | ==Kedi Achilat Pras== | ||
# See [[Kedi Achilat Pras]] (the time in which a Kezayit is considered eaten together) | # See [[Kedi Achilat Pras]] (the time in which a Kezayit is considered eaten together) | ||
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==Kedi Shtiyat Reviyit== | ==Kedi Shtiyat Reviyit== | ||
# See [[Kedi Shtiyat Reviyit]] (the time in which a Reviyit is considered drunk together) | # See [[Kedi Shtiyat Reviyit]] (the time in which a Reviyit is considered drunk together) | ||
==Prutah== | ==Prutah== | ||
# A prutah is 1/40 of a gram of silver (which is about a few cents). However, the prutah with regards to the mitzvah of returning a lost object is discussed [[Returning_Lost_Objects#Worth_a_Prutah| here]]. <ref> S”A CM 88:1 says a prutah is a half of a pearl of barley. Shiurei Torah (Rav Chaim Noeh pg 177) and Shiurei HaMitzvot (Chazon Ish pg 65) say a prutah is 1/40 of a gram of silver (which currently is about 2.3 cents). See Halachos of Other People’s Money (Rabbi Bodner pg 150) regarding a prutah for the mitzvah of returning a lost object. </ref> | # A prutah is 1/40 of a gram of silver (which is about a few cents). However, the prutah with regards to the mitzvah of returning a lost object is discussed [[Returning_Lost_Objects#Worth_a_Prutah| here]]. <ref> S”A CM 88:1 says a prutah is a half of a pearl of barley. Shiurei Torah (Rav Chaim Noeh pg 177) and Shiurei HaMitzvot (Chazon Ish pg 65) say a prutah is 1/40 of a gram of silver (which currently is about 2.3 cents). See Halachos of Other People’s Money (Rabbi Bodner pg 150) regarding a prutah for the mitzvah of returning a lost object. </ref> | ||
