ANSWERS TO REVIEW QUESTIONS
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafPesachim 10
(a) If a mouse took Chametz from a pile of Chametz and scampered off with
it into one of two rooms that had already been searched for Chametz , but
we don't know which - Rebbi Yehudah says that, as long as they both come
to ask separately, they are both declared Tahor (because of the principle
'Safek Tum'ah bi'Reshus ha'Rabim, Tahor').
(b) Rava (or Rebbi Yochanan) says that if the two owners came to ask
simultaneously, then even Rebbi Yehudah will agree that they will both be
Tamei; if they came independently, then even Rebbi Yossi will agree that
they are both Tahor - when do they argue, only when one of the two comes
to ask on behalf of both himself and his friend: Rebbi Yossi compares it
to when they ask simultaneously, Rebbi Yehudah to when they ask
independently (because it is possible to answer him that he is Tahor,
without actually saying that his friend is Tahor, too.
(c) If in winter, someone enters a valley where there is a corpse in one
of the fields, but he does not know which field he entered, according to
Rebbi Eliezer, he remains Tahor - because it is a double Safek (a S'fek
Sefeika) maybe he did not enter the field, and, even if he did, maybe he
did not touch or walk over, the corpse.
(d) The rule that he is Tamei - because it is a case of Safek Tum'ah
bi'Reshus ha'Yachid (seeing as we are speaking in the winter, when the
seeds have already begun to grow, and one does not have permission to
enter the field. Nevertheless, in our case, they agree that the room does
not require a second Bedikah, because Bedikas Chametz (once one has made
Bitul Chametz) is only mi'de'Rabbanan, whereas in the case of the two
paths, we are speaking about Tum'ah d'Oraysa.
(a) In a field containing one pile which is Tamei, and two which are Tahor
(or vice-versa), if all three are searched, but no Tum'ah is found -
according to the Chachamim, all three piles are now Tahor (since we assume
that the Tum'ah was somehow removed).
(b) According to Rebbi Meir, all three piles are Tamei. Why? Because
anything that has a Chezkas Tum'ah remains Tamei until the Tum'ah is
(c) If a mouse carries Chametz into a room, and the owner searched but
found nothing, then even Rebbi Meir will agree that it is not necessary to
search again, since Bedikas Chametz is only mi'de'Rabbanan (see Tosfos, DH
'Al', in whose opinion Bitul Chametz is nevertheless required).
(a) According to Raban Shimon ben Gamliel, even if one searched and found
a piece of Chametz, we do not assume that that is the piece brought in by
the mouse; Consequently, he is obligated to search the entire room.
If the mouse carried in *ten* pieces, and *nine* were subsequently found
then, according to the Rabbanan - all ten pieces are Chulin, because we
assume them to be different pieces than those carried in by the mouse.
(b) They argue in a case where they searched a field for a grave which
they knew to be there, and in the course of the search, they did indeed
find a grave. According to Rebbi, we assume the grave that they found to
be the one that was lost, and it is not necessary to continue with the
search; whereas according to Raban Shimon ben Gamliel, they are obligated
to search the entire field, irrespective of what they find.
(c) Rebbi Says that if someone left *one* Manah of Ma'aser Sheni money,
and when he returned, he found *two* - we assume the Manah to be the one
that he placed, and someone added a second Manah to the original one (so
both are Safek Ma'aser Sheni).
(d) According to the Chachamim - since he left one Manah and found two, we
presume that this is not the same money that he left, but that it is all
Chulin money. Similarly in our case, since the mouse carried *nine* pieces
of Chametz into the room and he found *ten*, we will not assume them to be
the same pieces that the mouse carried into the room, and he will be
obligated to continue searching until he finds just *nine* pieces. Note:
This Sugya speaks when both the money and the pieces of Chametz are tied
together (see Tosfos DH 'Hini'ach' and Maharsha).
(a) If someone leaves an ax in a specific spot in a room, and then finds
it elsewhere, the Chachamim rule that everything in the room is Tamei -
because someone must have entered the room and moved the ax. In the
process, he is likely to have touched any of the objects in the room (and
as far as a Chaver is concerned, unspecified people are assumed to be
(b) Raban Shimon ben Gamliel says that everything in the room retains is
Chezkas Taharah, because he probably lent the ax to someone or even moved
it himself, and forgot about it.
(c) According to the Rabbanan, if someone leaves Chametz in one corner of
a room that has already been searched, and finds it in another, he will be
obligated to search for Chametz; according to Raban Shimon ben Gamliel, he
will be Patur.
(a) It is not common for mice to leave crumbs. Consequently, if someone
follows a mouse that carried Chametz into a room and finds crumbs on the
floor, the owner will be obligated to search the room again - he must
assume that the Chametz that was found is not the same Chametz that the
mouse carried in.
(b) Children eating bread *do* tend to leave crumbs. Consequently, if he
followe a child into a room and discovered crumbs, he should just collect
them, but does not need to search the room again.
(a) If one sees a white mouse enter a room with a piece of Chametz in its
mouth and a black mouse leaving it, also with a piece of Chametz in *its*
mouth, the Gemara considers the possibility that the second mouse grabbed
the Chametz from the first one, in which case, the owner will be exempt
from a second Bedikah.
(b) The counter-argument is that mice do not grab from each other (honor
among thieves), in which case, this is a second pipece of Chametz, and he
will remain obligated to make Bedikas Chametz again.
(a) If we saw a mouse enter the room with Chametz in its mouth, and a
weasel come out with Chametz in *its* mouth, we will not necessarily
assume that the weasel took the Chametz from the mouse - because then it
would have been more likely for the weasel to have been holding the mouse
(which was in turn, still holding the Chametz) in its mouth. Consequently,
it is more logical to assume that this is not the same piece of Chametz.
(b) We even have doubts - if the weasel comes out holding the mouse and
the Chametz in its mouth, but separately. Do we now say that this is most
certainly not the same mouse and Chametz as the one that entered, because,
if it had been, why was the Chametz not still in the mouse's mouth? Or
perhaps, when the mouse saw the weasel, it got a shock and dropped the
Chametz, and the weasel then picked up first the one and then the other.
(a) If there is Chametz on a high beam, the Gemara asks whether one is
obligated to find a ladder to fetch it in order to burn it (due to the
possibility of the Chametz falling down on Pesach, in which case he may
come to eat it), or whether (seeing as he will anyway make Bitul Chametz,
and the Chametz is currently out of harm's way) the Chachamim did not
obligate him to go to such lengths).
(b) If the Chametz is in a deep pit, and is therefore not subject to
falling, the Chachamim may still have obligated him to climb down and
destroy the Chametz - because he may possibly descend into the pit on
Pesach, to do something there, find the Chametz there and eat it.
(a) The three time periods for Bedikas Chametz, according to Rebbi Yehudah
are the eve of the fourteenth, the morning of the fourteenth and the sixth
(b) The Rabbanan add from the sixth hour until night-fall (see Tosfos DH
've'Im' who interpret 'be'Soch ha'Mo'ed' to mean during Yom-Tov, and
'le'Achar ha'Mo'ed', even after Yom-Tov.
(c) The Chametz that remains after the Bedikah on the eve of the
fourteenth should be placed out of reach of children and mice, who may
otherwise take some of it, thereby creating problems.
(a) From Rebbi Yehudah's statement in a Beraisa 'Kol she'Lo Badak
bi'Sheloshah Perakim Halalu, Shuv Eino Bodek' it is clear that the dispute
between him and the Rabbanan concerns whether or not to search for Chametz
*after* the three times specified by Rebbi Yehudah (and not the three
(b) Rebbi Yehudah forbids searching after the time of Bi'ur, for fear that
he may come to eat any Chametz that he finds; whereas the Rabbanan
maintain that, since he is busy searching for Chametz to *destroy it*, he
is most unlikely to then go and *eat it*.