ANSWERS TO REVIEW QUESTIONS
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafEruvin 93
ERUVIN 92, 93 - have been dedicated by Mrs. Rita Grunberger
of Queens, N.Y., in loving memory of her late husband, Yitzchok
Yakov ben Eliyahu Grunberger. Mr Grunberger helped many
people quietly in an unassuming manner and is sorely missed by
all who knew him.
(a) 'Yesh bi'Mechitzos ha'Kerem Lehakel' - means, that if there are vines
growing right up to the wall in a field, it is permitted to sow seeds on
the other side of the wall, even by the entrance, where they will be
growing literally side by side (although if there was no wall there, it
would be necessary to maintain a distance of four Amos between one and
(b) 'Yesh bi'Mechitzos ha'Kerem Lehachmir' - means that, if the vines were
growing eleven Amos from the wall, it would be forbidden to sow in between
them and the wall (even though, if there had been no wall there, it would
only require a distance of four Amos).
(c) We see from here, Rava asked Abaye, that there is such a thing as a
(d) 'Why did you ask me from the Beraisa', Abaye asked Rava? 'Why did you
not ask the same Kashya from the Mishnah in Kil'ayim'?
(a) 'Machol ha'Kerem' is basically the same case as that of the Beraisa,
from which Rava asked Abaye.
(b) The reason that we need twelve Amos here, Abaye answered, is not
because the Mechitzah creates a Chumra, but because the four Amos next to
the vineyard are needed for Avodas ha'Kerem (to allow the animals together
with the plow to go around the vineyard whilst plowing); four Amos next to
the wall, because, one anyway tends to declare them Hefker in order not to
spoil the wall; and the remaining space is only *Chashuv* if it is at
least four Amos, but if it is less than that, it is *not*, and is Batel to
(a) Rav Yehudah says that if three travelers made a joint Eruv in three
adjoining Karfifos (of which the outer two are wider than the middle one),
with one of the travelers in each Karfaf - we consider them like a a group
of travelers (because we consider the residents of the two larger
enclosures as if they were in the small one - as we learnt above [on
92a]), and a group of at least three travelers are permitted to carry in
as large an enclosure as they need - even more than a Beis Sasayim per
(b) Should the middle Karfaf be wider than the two outer ones ...
1. ... if one of the outer ones is more than a Beis Sasayim - then it is
forbidden (to carry there), while the others are permitted.
2. ... if the middle Karfaf is more than a Beis Sasayim - then one may not
carry in any of them, since the other two both open completely into a
Reshus which is forbidden.
(a) If in the case when the middle Karfaf is wider than the outer two,
there are *two* travelers in the middle Karfaf and *one* in each of the
outer ones - the Gemara asks whether we will say that since if the two in
the middle are considered as belonging to one of the outer ones, then *it*
will have three, and if they are considered as belonging to the other
Karfaf, then *it* will have three. In that case, why should we not
consider them as belonging to *both* Karfifos, to give all the ree an
unlimited area to carry; or will we only consider *one* of the two
travelers as belonging to one of the outer Karfifos, and the other one, to
the other Karfaf, to give each outer Karfaf four thousand Amos - two Beis
Sasayim (but not both to both)?
(b) We do not consider the two middle ones as belonging to either one of
the outer ones - because we can assume that, in order to gain space, they
would prefer to spread out, one to one side, and the other to the other.
(c) Assuming that we go Lechumra and say like the second side of the
previous Sha'aleh, asks the Gemara, perhaps when there are *two* in each
of the outer Karfifos, and *one* in the middle one, we will definitely
consider the one to belong to each of the outer ones, and give it the Din
of a small group, or maybe one person cannot belong to two different
sides, and since we do not know which one, we do not allow either of them
an unlimited area.
(d) The Gemara concludes that we go Lekula in both Sha'alos, to give the two outer Karfifos an unlimited area to carry.
(a) When Rav Chisda says 'Gidud Chamishah, u'Mechitzah Chamishah, Ein
Mitztarfin', he means - that if a five-Tefachim wall separates between two
courtyards, one of which is five Tefachim lower than the other, they do
not combine to make a Reshus ha'Yachid.
(b) This only pertains to the residents of the upper courtyard, who do
*not* see a wall of ten Tefachim - but not to the lower courtyard, who
(c) The Beraisa, which permits *both* courtyards to make separate Eruvin -
speaks when the upper courtyard did have walls of *ten* Tefachim up to the
middle ten Amos, whose walls reached only as high as *five*.
(d) They cannot however, make a combined Eruv - since the lower courtyard
has full walls separating it from the upper one.
(a) According to Rav Chisda, the Seifa, 'Pachos mi'Kahn, Me'arvin Echad
ve'Ein Me'arvin Shenayim' - speaks when the width of the lower courtyard
is equivalent to the ten Amah Pesach of the large one - with no five
Tefach wall in between them. In that case, it is open completely to the
large one, and is forbidden to make its own Eruv.
Mereimar say 'Gidud Chamishah u'Mechitzah Chamishah Mitztarfin', and the
Halachah is like him.
(b) The upper courtyard is indeed permitted to make its own Eruv - 've'Ein
Me'arvin Shenayim' pertains only to the lower one.
(a) The Beraisa, which forbids the residents of the small courtyard to
carry, if the wall that divided them from the large courtyard breaks -
seems to hold that new residents, who were not included in the Eruv,
forbid carrying in the courtyard.
(b) Rabah however, refutes this proof - by suggesting that perhaps the
dividing wall broke *before* Shabbos.
(c) Abaye failed to understand why Rabah said *perhaps*, when Rabah
himself has already ruled 'Shabbos, Ho'il ve'Hutrah Hutrah', with regard
to a Pesach between two courtyards that became blocked.
(a) Rav does not hold 'Ho'il ve'Hutrah Hutrah'!
(b) Rav rules like Rebbi Shimon, who considers all the courtyards as one -
but that only applies when they did not make independent Eruvin; when they
did, even Rebbi Shimon will agree that each courtyard forbids the other.
(c) We know how Rav holds in this regard - from an episode in which a wall
between two courtyard fell, and Shmuel instructed them to replace the wall
with a sheet. Rav, who happened to be there at the time, turned round, to
show that, in his opinion, they should not have carried the sheet in the
(d) Rav turned round only to demonstrate that, Halachically, he disagreed
with Shmuel's ruling.
(a) Shmuel holds that, if the dividing wall breaks, each set of residents
is permitted to carry up to the wall, because of 'Ho'il ve'Hutrah Hutrah'.
(b) 'Ho'il ve'Hutrah Hutrah' means that what was *permitted* before
remains permitted. That does not mean that what was *forbidden* before
becomes permitted. Consequently, the Isur of carrying from one courtyard
to the other remains in full force.
(c) Shmuel will permit carrying vessels which were in either of the
courtyards when Shabbos entered to the other. (His Machlokes with Rav is
confined to vessels which were in *the houses* when Shabbos came in).
(d) In fact, Shmuel did not really require the sheet at all, he only told
them to put it up for reasons of Tzeni'us.