REVIEW QUESTIONS ON GEMARA AND RASHI
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafEruvin 101
ERUVIN 101 - has been generously dedicated by Rav Mordechai Rabin of
(a) The Tana of our Mishnah says 'ha'Deles she'be'Muktzah ve'Chadakim
she'ba'Pirtzah u'Mechtzeles Ein Noalin Bahen Ela-im-ken Gevohin min
Why does the Tana refer particularly to a Muktzah? What is a
(b) Which two conditions are required before a door may be put in place?
(c) What is wrong with putting up a door which is ...
(d) What are 'Chadakim she'ba'Pirtzah'?
- ... not tied?
- ... tied but not suspended?
(a) Abaye establishes the Beraisa which permits putting a door in place on
Shabbos, even if it is dragging on the ground, by one which *has* a hinge.
What does Rava say?
(b) What is 'Kankan ha'Nigrar'?
(c) What is the Din regarding using the above on Yom-Tov - if they are not
tied and suspended ?
(a) 'Deles Almanah ha'Nigreres Ein No'alin Bah'. What are the two
interpretations of a Deles Almanah?
(b) What is the Chidush? It is not Teluyah? (See Tosfos DH 'Deles'.)
(a) What do the following have in common: 1. Madurta; 2. Bei'asa; 3.
Kidra; 4. Puri'a; 5. Chavita?
(b) What do they mean?
(c) How does one arrange all of these in a way that is permitted on
Shabbos or Yom-Tov?
(d) That Tzedoki understood the Pasuk in Michah, which compares the best
of Yisrael to a thorn, to be derogatory.
Rebbi Yehoshua found two ways
to disillusion him.
What were they?
(a) Why does Rebbi Meir prohibit standing in a Reshus ha'Yachid and
opening a door in a Reshus ha'Rabim or vice-versa, even though he does not
move the key more than four Amos in the Reshus ha'Rabim, nor does he
intend to transfer it to where he is standing?
(b) How would the latter case (vice-versa) work in practice? Where would
the key be and how would he propose to unlock the door?
(c) What would one be required to do in order to be permitted to unlock
the door, according to Rebbi Meir?
(d) What was the Chachamim's reaction when they heard this from Rebbi
(a) The Rabbanan counter Rebbi Meir's statement by referring to an
incident that occurred in Yerushalayim. But Yerushalayim is a Karmelis,
asks the Gemara, and Rebbi Meir is speaking about Reshuyos d'Oraysa?
Answers to questions
What makes Yerushalayim a Karmelis?
(b) What is Rav Papa (others say Rabah)'s initial answer?
(c) Rava answers that the Rabbanan are referring to the Seifa of Rebbi
Meir (omitted from our Mishnah), where he forbids even opening the door of
a garden (Ginah) in the manner described in our Mishnah.
Why is a Ginah
considered a Karmelis?
(d) What is the case? Where is the key?
What does Rebbi Meir hold regarding a Ginah which adjoins a Reshus
ha'Rabim, when there is a Beis Sha'ar adjoining the door that leads from
one to the other?
(a) According to Rebbi Meir, where does one place the key to open the lock
of a shop that is less than ten Tefachim from street level?
(b) Why does the Beraisa say '*ve'Chen* Chanuyos ha'Pesuchos li'Reshus
ha'Rabim, bi'Zeman she'ha'Man'ul le'Matah me'Asarah Tefachim' ... ?
is this Din connected with the previous one?
(c) What do we learn from the fact that Rebbi Meir now permits standing in
the street and moving the key in a Karmelis?
(a) What does one do, according to Rebbi Meir, if the lock is above ten
(b) What is the problem with establishing the surface-area of the lock as
being ...1. ...less than four by four Tefachim? 2. ... more than four by
(c) So how *do* we establish the surface-area of the lock and what is the
basis of the Machlokes between Rebbi Meir and the Rabbanan?
(d) We have already derived from this Beraisa two things:
1. the Machlokes between Rebbi Meir and the Rabbanan of 'Chokekin
2. that Rebbi Meir retracted with regard to standing in a Reshus d'Oraysa
and carrying in a Reshus de'Rabbanan. What is the third Chidush that
emerges from the Beraisa?
(a) Why is bolting a door using a straight bolt that is not fixed to the
Answers to questions
(b) What is a 'Nagar she'Yesh b'Rosho Gelustera', and why does Rebbi Yossi
permit its use as a bolt?
(c) Rebbi Eliezer, who forbids even a 'Nagar she'Yesh b'Rosho Gelustera',
brings a proof from an incident in which Raban Gamliel and the Elders
forbade it - even though until that time, it had been customarily
How did Rebbi Yossi counter that proof?
(d) Both Tana'im agree that the bolt (even if it has a knob on top) must
What then, is their Machlokes?