Eruvin 74b

עירובין ע״ד ע״ב

Learn Eruvin 74b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

The end of the story of איבות בר איהי's לחי (where a person sleeps sets his residence), and רב's ruling about an alley shared by a גוי and a Jew, with אביי and רב יוסף discussing its reason

Overview

This amud finishes the story of איבות בר איהי, who lived in an alley and set up a לחי with שמואל's permission, even though רבי אלעזר had objected that a לחי needs an alley with several residences. After שמואל died, רב ענן knocked the לחי down, and איבות protested. The גמרא first concludes from this that שמואל never accepted רבי אלעזר's objection. It then rejects that proof: a חזן slept in a synagogue on that alley, so it really had more than one residence. איבות misunderstood because he held that where a person eats determines his residence, while שמואל holds that where he sleeps determines it. Next, רב rules that in an alley with a גוי on one side and a Jew on the other, the Jews may not make an עירוב through windows to permit carrying through the doors into the alley. אביי asks רב יוסף whether this applies to a חצר too, and explains that he might have thought רב's reason applies only to a מבוי. רב יוסף challenges this, asking why רב would need two rulings. אביי begins to answer that both are needed, and his answer continues on the next amud.

Opening lines

The steps (10)

1. Statementרב ענן knocks down the לחי and איבות protests
2. ProofInference that שמואל never accepted the objection
3. RejectionRejection: a synagogue attendant slept there
4. ResolutionEating place versus sleeping place determines residence
5. Statementרב: an alley shared by a gentile and a Jew cannot be permitted through windows
6. Questionאביי asks whether רב's ruling also applies to a courtyard
7. Responseרב יוסף answers yes, since it is the same principle
8. Responseאביי explains he might have read רב's reason as limited to alleys
9. ChallengeWhy would רב need two rulings
10. ResolutionBoth rulings are needed: the answer begins