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prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem

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Eruvin 83


(a) Rebbi Nasan and Rebbi Dosa describe the k'Beitzah of Tum'as Ochlin as 'Kamo'ah u'Kelifasah. What should it be according to ...
  1. ... Rebbi Yehudah (of the Beraisa of Chatzi Peras)?
  2. ... Rebbi Yossi?
  3. ... Rebbi?
(b) Who are the Chachamim who give the Shiur of Tum'as Ochlin as a k'Beitzah u'Mechtzah Shochkos?

(c) Considering that the author of this statement is Rav Chisda, who has already explained Rebbi Yochanan ben Berokah above to conform with this, what is the Chidush?

(a) How many k'Beitzim are there in a Sa'ah Midbari, which comprises six Kabin?

(b) In Yerushalayim, they added a sixth to the Sa'ah.
What does a sixth really mean, and how many (whole) k'Beitzim are there in a Sa'ah Yerushalmi?

(c) In Tzipori, they added another sixth to the Sa'ah.
How many k'Beitzim are there in a Sa'ah Tzipori?

(a) Rebbi reckons 217 k'Beitzim in a Ne'usian Sa'ah.
What is wrong with the Gemara's contention (to reconcile that with the Shiur Tzipori) that Rebbi added the Shiur Chalah?

(b) Then how *do* we account for the discrepancy?

(c) The Beraisa states that the Sa'ah Yerushalmi is one sixth more than the Sa'ah Midbari, and the Sa'ah Tzipori one sixth more than the Sa'ah Y erushalmi. Consequently, the difference between the Sa'ah Midbari and the Sa'ah Tzipori is *one third*.
Which three suggestions (to explain the final phrase i.e. one third of what?) does the Gemara reject outright?

(a) Rebbi Yirmiyah then suggests that what the Beraisa means is that the difference between the Sa'ah Tzipori and the Sa'ah Midbari (63) is close to a third of its own total (69), and that a third of its own total (69) is close to a half of the Midbari Sa'ah (72).
On what grounds does the Gemara reject that suggestion too?

(b) How does the Gemara finally explain the Beraisa?

Answers to questions



(a) The Shiur Chalah is the equivalent of 'a dough of the Midbar'.
How do we know how much the dough of the Midbar was?

(b) How many Sa'ah are there in an Eifah?

(c) Given the facts that an Eifah is the equivalent of a Bas, and that a Kur equals thirty Sa'ah, what do we learn from the Pasuk in Yechezkel "Ma'aser ha'Bas min ha'Kur"?

(d) Then how much did the Omer of Man that fell daily, contain ...

  1. ... in Sa'in?
  2. ... in Kabin?
  3. ... in Lugin?
  4. ... in k'Beitzim?
(a) What is the connection between *this* Shiur and the Shiur Chalah quoted in the Mishnah 'Shiv'ah Reva'im Kemach ve'Od'?

(b) What did this become when it was transferred ...

  1. ... first into the Yerushalmi measurement?
  2. ... and then into the measurement of Tzipori?
(c) What are the Beraisa's concluding words regarding someone who eats that amount, more than it or less than it?
(a) If the residents of the Chatzer and those of the balcony (which is at least ten Tefachim high) forgot to make a combined Eruv, who is allowed to carry in the Chatzer?

(b) In what sort of Reshus (besides the balcony itself) are the residents of the balcony exclusively, permitted to carry?

(c) Why does the one not forbid the other to carry, on account of the ladder that connects them?

(d) If there is a pit with a mound of earth surrounding it next to the balcony, under which circumstances may it be used exclusively ...

  1. ... by the residents of the Chatzer?
  2. ... by the residents of the balcony?
(a) What is the meaning of, and what will be the Din in each of the following cases ...
  1. ... 'la'Zeh ba'Pesach, ve'la'Zeh ba'Pesach'?
  2. ... 'la'Zeh bi'Zerikah, ve'la'Zeh bi'Zerikah'?
  3. ... 'la'Zeh be'Shilshul ve'la'Zeh be'Shilshul'?
(b) And what will be the Din by ...
  1. ... 'la'Zeh ba'Pesach, ve'la'Zeh bi'Zerikah'?
  2. ... 'la'Zeh ba'Pesach, ve'la'Zeh be'Shilshul'?
(c) According to Rav, by 'la'Zeh be'Shilshul ve'la'Zeh bi'Zerikah', neither is permitted to use it.
What does Shmuel hold?
(a) What is the Kashya on Rav from our Mishnah 'Anshei Chazter ve'Anshei Mirpeset she'Shachechu ve'Lo Ervu, Kol she'Gavo'a mi'Yud Tefachim, le'Mirpeset'? How did the Gemara initially understand the case?

(b) To answer Rav, we establish the Mishnah like Rav Huna.
What does Rav Huna say?

Answers to questions
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