Eruvin 42b

עירובין מ״ב ע״ב

Learn Eruvin 42b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

Carrying beyond one's תחום (זריקה versus משיכה), the pen and stable dispute, and why a boat is treated leniently

Overview

This amud continues the discussion of רב הונא's view that a person may not throw objects into an area where he himself may not walk. A ברייתא seems to permit carrying throughout a city even when the person's limit ends in the middle of it. רב הונא answers that this means pulling objects toward himself, not throwing. רב הונא adds that if the limit ends mid-courtyard, the person may still carry in his half, and we do not worry that he will carry in the rest. רב נחמן says that even רב הונא permits carrying throughout a house when the limit ends at the roof's edge, because the roof edge acts like a wall. רב הונא בריה דרב נתן tries to link the dispute to the משנה about a person placed in a pen or stable, but the גמרא rejects both sides of that comparison. רב rules like רבן גמליאל in a pen, a stable, and a boat, while שמואל rules like him only on a boat. רבה and רבי זירא give different reasons why a boat is lenient. The גמרא begins to explain why רבי זירא rejects רבה's reason, and that explanation continues on the next amud.

Opening lines

The steps (26)

1. StatementA ברייתא about a limit that ends mid-city
2. ChallengeDoes carrying here mean throwing?
3. Resolutionרב הונא: it means pulling, not throwing
4. Statementרב הונא: a limit ending mid-courtyard
5. ChallengeIsn't that obvious?
6. ResolutionRead it as: he does have half the courtyard
7. ChallengeIsn't this also obvious?
8. ResolutionThe concern that he will carry in the whole courtyard
9. Statementרב נחמן: when the limit ends at the edge of a roof
10. QuestionWhy does רב הונא agree here?
11. ResponseThe roof edge acts like a wall
12. StatementThe argument matches an argument among תנאים
13. ProofThe lenient תנאים do not decree carrying because of walking
14. ProofThe strict תנאים do decree carrying because of walking
15. RejectionThe lenient תנאים may only be lenient because the pen and field are separate places
16. RejectionEven רבן גמליאל might decree carrying within one place
17. Rejectionרבי יהושע and רבי עקיבא may not be decreeing at all
18. Statementרב rules like רבן גמליאל in pen, stable, and boat
19. Statementשמואל rules like רבן גמליאל only on a boat
20. QuestionWhy does everyone agree about the boat?
21. Responseרבה: He settled inside the boat's walls before שבת
22. Responseרבי זירא: The boat keeps moving him anyway
23. QuestionWhat is the practical difference between the two reasons?
24. ResponseTwo cases: broken walls, or jumping to another boat
25. QuestionWhy does רבי זירא not agree with רבה?
26. Responseרבי זירא's answer begins with the boat's walls