REVIEW QUESTIONS ON GEMARA AND RASHI
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafEruvin 12
ERUVIN 11-15 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) When Rebbi Eliezer told his Talmid, Rebbi Yossi ben Pereida, to add a
second Lechi to the Mavoy in which he was sitting, he replied 've'Chi
Lesosmo Ani Tzarich'?
What does the Gemara try to prove from his reply?
(b) How does the Gemara parry that proof? What else may Rebbi Yossi ben
Pereida have meant?
(c) What was Rebbi Eliezer's reply?
(a) In the same Beraisa, Raban Shimon ben Gamliel says that Beis Shamai and
Beis Hillel agree that a Mavoy less than four Amos wide does not require any
Tikun at all.
What does he really mean to say?
(b) What is the minimum width for a Mavoy to require a Tikun?
(c) Rav Nachman rules like Rebbi Eliezer that a Chatzer requires two Chatzer
. According to Rav Sheshes, the Chachamim agree with Rebbi Eliezer by the
Pasim of a Chatzer.
Who is meant by the Chachamim, and why did Rav Nachman
then need to rule like Rebbi Eliezer?
(a) Rebbi Yochanan rules like Rebbi Eliezer and Rebbi (that a Chatzer
requires two Lechayim). He also says that Pasei Chatzer need to be four
Why can we not combine the two statements by simply saying that,
for a Chatzer, Rebbi Yochanan requires two Pasim of four Tefachim?
(b) How did Rebbi Zeira resolve Rebbi Yochanan's two statements when he came
(c) How does this conform with the Beraisa 'Ketanah be'Eser, Gedolah
(a) In which case does Rav Yehudah quoting Shmuel, permit a Chatzer with
(b) What does a regular Chatzer require, according to him?
(c) Which other leniency do Chazal permit by water?
(a) The Gemara establishes Shmuel, permits a Chatzer with Rov Dofen
standing, when the wall was only seven Tefachim, in which case, Rov Dofen
*is* four Tefachim. How does the Gemara try to refute this suggestion (with
a statement by Rav Achli)?
(b) Besides answering that Rav Achli himself is a Machlokes Tana'im, what
other answer does the Gemara give (to differentiate between a Chatzer and a
(a) If sea-water enters a Chatzer via a breach in the wall, how wide may the
breach be for no Tikun to be required?
Answers to questions
(b) What sort of Tikun is necessary if the breach is more than ten Amos, and
what does it come to permit?
(c) Why is carrying in this Chatzer is permitted.
Is it not a Reshus
ha'Yachid which opens into a Karmelis?
(d) Does the above apply even to a Chatzer whose wall is *completely*
(a) Why does Rav Yehudah say that someone who throws from a Reshus ha'Rabim
into a Mavoy with a Lechi, is Chayav, but Patur if it has a Koreh?
(b) At this stage, what do we think constitutes a Reshus ha'Yachid according
to Rav Yehudah? How many walls does it require?
(c) Rav Yehudah describes the Mavoy as one 'she'Lo Nishtatfu Bah'.
we deduce from this, and what problem does this present Rav Sheshes with?
(d) Why did Chazal forbid carrying from a house flanking a public Chatzer
into the Chatzer?
(a) How does Rav Sheshes amend the words 'she'Lo Nishtatfu Bo'?
(b) How many walls does a Reshus ha'Yachid need according to Rav Yehudah,
(c) Rav Yehudah holds 'Lechi Mishum Mechitzah, Koreh Mishum Heker.
Rava's opinion in this matter?
(d) How does Rava explain the Beraisa 'ha'Zorek le'Mavoy, Yesh Lo Lechi,
Chayav, Ein Lo Lechi, Patur (implying 'Lechi Mishum Mechitzah')?
(a) According to Rebbi Yehudah, how would someone who owned a house on
either side of the street, be able to rectify that section of road?
(b) Why is this a Kashya on Rava - even Rabbanan?
(c) What does the Gemara answer?
(d) We have already learnt that a square Mavoy has the Din of a Chatzer.
What Tikun is required to carry inside it, according to Rav Nachman? What
mistake did Rebbi Zeira make in this regard?
(a) Is a circular Mavuy permitted by means of a Lechi or Koreh?
Answers to questions
(b) Shmuel thought that the length of a Mavoy must be at least double its
width, if it is to be permitted by a Lechi or a Koreh.
What did Rav tell
him - quoting his uncle?
(c) What was the name of his uncle?