THOUGHTS ON THE DAILY DAF
brought to you by Kollel Iyun Hadaf of Har Nof
Rosh Kollel: Rav Mordecai Kornfeld
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Eruvin 89
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ERUVIN 88 & 89 have been dedicated by Mrs. G. Turkel
(Rabbi Kornfeld's grandmother) to the memory of her husband,
Yisrael Shimon (Isi) ha'Levi Turkel, who passed away on 10 Av
5780.
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1) CARRYING ON THE ROOF
QUESTION: The Chachamim in the Mishnah maintain that the roofs of
different residences are considered separate Reshuyos (in contrast to the
opinion of Rebbi Meir, who maintains that the roofs are all considered one
domain). Rav and Shmuel argue whether the Chachamim permit carrying in
each roof alone. Shmuel says that it is permitted to carry throughout each
roof, since we view the Mechitzos that are below the roofs, which separate
the houses from one another, as rising up above the roof to separate each
roof from the next (and thus each roof is surrounded by Mechitzos). Rav
argues and maintains that it is permitted to carry only four Amos on the
roof, because we do not view Mechitzos as rising above the roofs and,
consequently, each roof opens into an area in which the residents of this
roof are forbidden to carry ("Parutz b'Milu'o l'Makom ha'Asur Lo").
Why are Rav and Shmuel arguing about what the Chachamim hold? Both Rav and
Shmuel rule like Rebbi Shimon (91a), who says that all roofs are
considered one domain! If so, one may certainly carry more than four Amos
on any of the roofs, and even from one roof to the next.
ANSWERS:
(a) TOSFOS (DH Rav Amar) says that if one wants to move utensils that were
located *in the house* when Shabbos started and that are now located on
the roof, even Rebbi Shimon agrees that it is forbidden to move the
utensils to another person's roof. That is where the argument between Rav
and Shmuel is pertinent. According to Shmuel, Rebbi Shimon would permit
such utensils to be moved throughout the roof of the house from which they
were taken, since the roof is considered surrounded by Mechitzos.
According to Rav, the utensils may not be carried more than four Amos on
the roof.
(b) Alternatively, one may not carry in an area which is larger than a
Beis Se'asayim and which was not Hukaf l'Dirah. Hence, if the total area
of the adjacent roofs is greater than a Beis Se'asayim, the argument
between Rav and Shmuel would be pertinent even according to Rebbi Shimon.
According to Shmuel, one may carry on the roofs because they are
considered to be surrounded by Mechitzos, none of the roofs are larger
than Beis Se'asayim of its own. According to Rav, the roofs have no
Mechitzos separating them from each other, and thus they constitute an
area of greater than a Beis Se'asayim which is not Hukaf l'Dirah.
Therefore, one may not carry more than four Amos on the roofs.
89b
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