Eruvin 52b

עירובין נ״ב ע״ב

Learn Eruvin 52b step by step: Aramaic beside English, every question, answer and proof colour-coded.

Open Eruvin 52b in Gemara Clarity

Topic

חמר גמל, stepping outside the תחום, and the end of פרק מי שהוציאוהו

Overview

The amud opens by asking whose view the story of רב נתן בר אושעיא follows, and concludes that it could fit either רב יוסף or רבה. Next, the גמרא asks why our משנה repeats רבי מאיר's ruling of חמר גמל. רב ששת answers that the earlier משנה covered only a doubtful עירוב, while ours teaches that he is a חמר גמל even when he certainly made no עירוב. A new משנה then rules that someone who stepped outside his תחום may not come back in, while רבי אליעזר allows it from two אמות. The גמרא brings two versions of רבי חנינא about a person with one foot in and one foot out, linking the lenient view to אחרים, who go by where most of the body is. It then reconciles conflicting ברייתות about רבי אליעזר's numbers, explaining one as counting differently and the other as speaking of a מודד. Another משנה rules that a traveler caught outside the תחום at nightfall may not enter, but רבי שמעון allows fifteen אמות because surveyors set the marker inside the true limit to guard against measuring errors. The פרק ends, and the next פרק begins explaining how a city's border is drawn, continuing on the next amud.

Opening lines

The steps (23)

1. QuestionWhose view did רב נתן בר אושעיא follow?
2. RejectionIt could also follow רבה and רבי יהודה
3. StatementQuoting רבי מאיר in our משנה
4. ChallengeDidn't we already learn this in another משנה?
5. ResolutionEven when he certainly made no עירוב, he is a חמר גמל
6. ResolutionEven a certain lack of עירוב can lead to חמר גמל
7. StatementNew משנה: someone who went outside his תחום
8. StatementOne foot outside is enough to forbid coming back in
9. ChallengeA ברייתא says he may come back in
10. ResolutionThe ברייתא follows אחרים, who go by most of the body
11. StatementSecond version: one foot inside, he may come back in
12. ChallengeA ברייתא says he may not come back in
13. Resolutionרבי חנינא follows אחרים, who go by the majority of the body
14. StatementQuoting רבי אליעזר in the משנה: two אמות yes, three no
15. ChallengeA ברייתא quotes רבי אליעזר as one yes, two no
16. ResolutionBoth mean the same thing, counted differently
17. ChallengeAnother ברייתא: even one אמה is forbidden
18. ResolutionThat ברייתא is about a person who measured his own 2000 אמות
19. StatementEven one אמה outside the limit, he may not enter
20. Statementרבי שמעון allows entry from up to fifteen אמות outside
21. StatementA ברייתא explains which mistakes the margin guards against
22. ConclusionHadran — Closing פרק מי שהוציאוהו
23. StatementNew פרק: how a city's border is extended