Yoma 79a

יומא ע״ט ע״א

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Topic

How big is the 'large date' (כותבת הגסה) that makes one liable for eating on יום כיפור, and how this measure compares to a כביצה

Overview

This amud continues רב פפא's question: is the large-date measure for יום כיפור counted with the pit or without it? רב אשי asks a similar question about a bone the size of a barley grain. He asks whether that grain is measured with its husk, and whether it is wet or dry. The גמרא explains that each אמורא found the other's question obvious. 'Large' means as big as possible, so the pit counts. The name 'barley' only fits a dry grain in its husk. Next, רב יהודה rules that the large date is a bit more than a כביצה, because that amount settles a person's mind. The גמרא challenges him with a ברייתא. In it, רבן גמליאל ate two dates in the סוכה only as a personal stringency, and רבי צדוק ate less than a כביצה outside the סוכה. Together these suggest that two dates are under a כביצה, and the answer to this challenge comes on the next amud.

Opening lines

The steps (7)

1. QuestionDoes the date measure include the pit?
2. QuestionA parallel question about the barley-grain measure
3. ResponseWhy רב אשי did not ask רב פפא's question
4. ResponseWhy רב פפא did not ask רב אשי's question
5. StatementThe large date is more than an egg-bulk
6. ChallengeChallenge from the story of two dates and the סוכה
7. Challengeרבי צדוק shows that less than an egg needs no סוכה