Eruvin 72a

עירובין ע״ב ע״א

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Topic

Combining עירוב חצרות and שיתוף מבואות, and how many עירוב contributions groups in one divided hall must make

Overview

This amud opens with the second opinion in a dispute about where רבי מאיר and חכמים disagree over needing both an עירוב חצרות and a שיתוף מבואות. That opinion says that with wine everyone requires both, and the argument is only about bread. The גמרא challenges this from the ברייתא's wording. רב גידל in the name of רב answers that both options in the ברייתא use bread. Three אמוראים then rule in favor of רבי מאיר, but at different strengths: הלכה, מנהג, or נהגו העם. A new משנה follows about five groups spending שבת in one divided hall. בית שמאי require a separate עירוב for each group, while בית הלל say one is enough, unless the groups are in separate rooms or upper stories. The גמרא then asks what kind of divider the משנה means. It brings two versions of רב נחמן's view about a peg partition, and two opposite views from רבי חייא and רבי שמעון ברבי about partitions that do or do not reach the ceiling.

Opening lines

The steps (10)

1. StatementThe second view: the dispute is only about bread
2. ChallengeChallenge from the ברייתא's wording
3. ResolutionRereading: both options use bread
4. StatementThree levels of ruling for רבי מאיר
5. StatementFive groups in one hall: one עירוב or five?
6. StatementGroups in separate rooms or upper floors need separate עירוב
7. Statementרב נחמן: the argument is only about a weak divider
8. StatementSecond version of רב נחמן: the argument applies even to a peg divider
9. StatementFirst view: the argument is about dividers that reach the ceiling
10. StatementSecond view: the argument is about dividers that do not reach the ceiling