REVIEW QUESTIONS ON GEMARA AND RASHI
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafEruvin 8
ERUVIN 6-10 sponsored by a generous grant from an anonymous donor. Kollel Iyun Hadaf is indebted to him for his encouragement and support and prays that Hashem will repay him in kind.
(a) The Gemara initially thought that Rav and Shmuel argue (whether one may
carry in a Mavuy that opens into a Rechavah or a Chatzer) both by 'Lo Ervu'
and by 'Ervu'. What is their Machlokes ...
(b) Rav and Shmuel will agree that, even if the Bnei Chatzer did make an
Eruv with the Bnei Mavoy, it is forbidden to carry in the Mavoy in the
following three cases:
- ... by 'Lo Ervu'?
- ... by 'Ervu'?
(c) What is the reason for the Chumra in the latter case?
- 'Kalah le'Tzidei Rechavah';
- 'Zeh Keneged Zeh';
- 'Rechavah de'Yachid'. What do these mean?
(a) Why was Rebbi uncertain whether or not to permit carrying in that Mavoy
which was flanked on one side by a sea, and on the other, by a large trash-
heap? He foresaw two possible problems.
What were they?
(b) How do we reconcile this with the Mishnah later in Ha'motze Tefilin,
which permits throwing from one's window on to a trash-heap in the Reshus-
ha'Rabim (unconcerned that it may have been cleared away).
(c) Did the Chachamim of Rebbi agree with him?
(d) The alleyways of Sura ran into the sea.
What did Mereimar do to permit
carrying in them?
(a) What did they do to permit carrying in that bent Mavoy in Sura?
(b) What objection did Rav Chisda raise?
(c) How could they have remedied the fault?
(a) We concluded earlier that Rav forbids carrying in a Mavoy that leads
into a Chatzer, because they did not make an Eruv.
Answers to questions
Why is this not inherent
in the Mishnah in Kol Gagos: 'Chatzer Ketanah she'Nifretzah li'Gedolah,
Gedolah Muteres, u'Ketanah Asurah, Mipnei she'Hi ke'Pischah shel Gedolah'?
(b) But why does Rav need to inform us that the Mavoy is Asur? Why do we not
know that Din of Chatzer Ketanah of the Mishnah?
(c) Why is Rav's initial Chidush not inherent in the Beraisa 'Chatzer
she'ha'Rabim Nichnasin Lah be'Zu, ve'Yotz'in Lah be'Zu ... Reshus ha'Yachid
(d) The Beraisa also adds 'Reshus ha'Rabim le'Tum'ah'.
What does this mean,
and why is that?
What will be Rav's Chidush according to Rabah who (as we already quoted
earlier in the Sugya) holds that 'Zeh Keneged Zeh' is forbidden?
(a) What is a 'Nadel'?
(b) What is a 'Mavoy he'Asuy ke'Nadel'?
(c) What two objections does Rava raise on Abaye, who rules that the main
Mavoy requires a Tzuras ha'Pesach, and each of the small Mavu'os, a Lechi or
a Koreh at the end leading to the Reshus ha'Rabim?
(d) What does Rava therefore hold in this case?
(a) If one side-wall of the Mavoy extends further into the street than the
opposite one, Rav Kahana bar Tachlifa permits a diagonal Koreh to be placed
edge of one to the edge of the other.
What does Rava say to this?
(b) Why does he disagree with Rav Kahana bar Tachlifa?
(c) What is Rav Kahana bar Tachlifa's reason?
(d) In which case will Rav Kahana bar Tachlifa agree with Rava, that a Koreh
must be placed at ninety degrees edge of the shorter wall?
(a) There is a dispute among the Amora'im whether one may carry underneath
How might their Machlokes be connected to the question of
whether a Koreh serves as a Mechitzah or as a Heker?
(b) What are the other two ways of explaining their Machlokes?
(c) Why does Rav Chisda maintain that, in any event, carrying in the space
next to the Lechi is prohibited (see Tosfos DH 'ha'Kol')?
(d) Rav Chisda uses the expression 'Bein ha'Lechayayim'.
Does this mean
that a Mavoy requires *two* Lechayayim before one may carry there?
(a) When Rami bar Chama asked Rav Chisda (his father-in-law) what the Din
would be if the Koreh lay on two poles that were placed just outside the
Mavoy, he replied 'le'Divrei ha'Matir, Asur, le'Divrei ha'Oser, Mutar'. What
did he mean by that?
(b) What does Rava hold in this matter?
(a) 'Haysah Koraso Meshuchah O Teluyah; Pachos mi'Sheloshah, Ein Tzarich
Lahavi Koreh Acheres' ...
Answers to questions
How does the Gemara at first understand the
difference between the terms 'Meshuchah' and 'Teluyah', and why does that
present Rava with a Kashya?
(b) How will Rava explain the two terms?
(c) Then what is the Chidush of 'Teluyah'?
(d) In which point does Raban Shimon ben Gamliel disagree with the Tana