POINT BY POINT SUMMARY
Prepared by Rabbi P. Feldman
of Kollel Iyun Hadaf, Yerushalayim
Rosh Kollel: Rabbi Mordecai Kornfeld
Ask A Question on the daf
Previous daf Bava Metzia 90
1) ANIMALS WORKING WITH TERUMAH AND MA'ASER
(a) Version #1 - Rashi (Beraisa #1): One who muzzles a cow
that is Meraches (threshes grain that was soaked and
dried) or threshes Terumah or Ma'aser, he does not
transgress "Lo Sachsom" (Rashi - in all these cases, it
was already Kavu'a for Ma'aser; Tosfos - regarding
Terumah and Ma'aser, this is not "Disho" (food fit for
2) ASKING A NOCHRI TO MUZZLE
1. This is forbidden because others (who assume it
threshes regular grain) will think he transgresses;
(b) Version #2 - Rambam (Beraisa #1): One may muzzle a cow
that is Meraches (walks over grain - this is not
1. If it threshes Terumah or Ma'aser, he does not
transgress "Lo Sachsom", but this is forbidden
because others (who assume it is Chulin) will think
he transgresses; (end of Version #2)
(c) Contradiction (Beraisa #2): One who muzzles a cow that is
Meraches does not transgress "Lo Sachsom";
i. Rather, he brings a handful of the species it
threshes and hangs it near its mouth so it can
ii. R. Shimon says, he gives it vetch (horsebean),
for this is the best food for it.
1. If it threshes Terumah or Ma'aser, he transgresses.
(d) Answer #1 (regarding Terumah): He does not transgress if
it threshes regular (mid'Oraisa) Terumah, he transgresses
if it threshes produce grown from Terumah seeds (which is
only Terumah mid'Rabanan);
2. If a Nochri threshes with Reuven's muzzled cow,
Reuven does not transgress;
3. If Reuven threshes with a muzzled cow of a Nochri,
4. The Beraisos argue regarding Terumah and Ma'aser!
1. The contradiction remains regarding Ma'aser.
(e) Suggestion: Perhaps also regarding Ma'aser, he
transgresses if it threshes produce grown from Ma'aser.
(f) Rejection: Granted, produce grown from Terumah is Terumah
- but produce grown from Ma'aser is Chulin!
1. (Mishnah): Produce grown from Tevel or Ma'aser Sheni
(g) Answer #1 (regarding Ma'aser): He transgresses if it
threshes Ma'aser Rishon (it is like Chulin), not if it
threshes Ma'aser Sheni.
(h) Answer #2 (regarding Ma'aser): In both Beraisos, it
threshes Ma'aser Sheni;
1. Beraisa #1 is R. Meir, who says that Ma'aser Sheni
is like Hekdesh; Beraisa #2 is R. Yehudah, who says
that Ma'aser Sheni is like Chulin.
(i) Answer #3 (regarding Ma'aser): He is liable regarding
Ma'aser Sheni of Demai (doubtfully tithed produce -
mid'Oraisa, it is Chulin); he is exempt regarding proper
(mid'Oraisa) Ma'aser Sheni.
2. Question: What is the case that it is Ma'aser before
3. Answer: He declared it Ma'aser when it was still
4. Question: According to R. Yehudah, why is he liable?
He may not let the animal eat Ma'aser Sheni outside
5. Answer: The case is, it threshes within
1. This suggests another answer for Terumah!
(j) Answer #2 (regarding Terumah): He is liable regarding
Terumah of Demai, exempt regarding proper Terumah.
(k) Question: We find Ma'aser of Demai, but not Terumah of
1. (Beraisa): (Yochanan Kohen Gadol) instructed people
not to say the declaration of Ma'aser (because it
was enacted to give Ma'aser Rishon to Kohanim or the
poor, people cannot say "Nesativ la'Levi") and
decreed that one who buys produce from a commoner
(i.e. one who did not accept all the stringencies of
being trustworthy about Ma'aser) must separate
(l) Answer #3 (regarding Terumah): He is liable regarding
Terumas Ma'aser of Demai, exempt regarding proper Terumas
i. This is because he found that many people only
separated Terumah Gedolah, not Ma'aseros.
(m) Question: If an animal was suffering diarrhea from
eating, may he muzzle it?
1. If the Mitzvah is for the physical well-being of the
animal, it is better that it not eat;
(n) Answer (Rav Sheshes - Beraisa - R. Shimon): He gives it
vetch for this is the best food for it.
2. If the Mitzvah is because the animal is pained when
it sees food and cannot eat it, he should let it
1. This shows that the Mitzvah is for the physical
well-being of the animal.
(a) Question: May Reuven ask a Nochri 'Muzzle my cow and
thresh with it'?
1. It is forbidden to ask a Nochri to do Melachah on
Shabbos - perhaps that is a stringency of Shabbos
(since one who desecrates Shabbos is liable to
death), it does not apply to muzzling, which is only
(b) Answer #1 (Beraisa): If a Nochri threshes with Reuven's
muzzled cow, Reuven does not transgress.
2. Or - is there no distinction?
1. He does not transgress, but it is forbidden!
(c) Rejection: Really, it is permitted; the Tana said he does
not transgress for parallel structure to the next clause,
if Reuven threshes with a muzzled cow of a Nochri, Reuven
(d) Answer #2 - Question (from Eretz Yisrael): There are
Nochrim that steal bulls from Yisraelim (their friends,
who prefer castrated bulls for plowing), castrate them
and return them - what is the law?
(e) Answer (Shmuel's father): This is a ruse - we do not let
them benefit from this, the owners must sell them. (Even
though castration is only a Lav, it is forbidden to ask a
Nochri to do it.)
3) DIFFERENT KINDS OF MUZZLING
(f) Rejection (Rav Papa): In Eretz Yisrael, they hold that
Nochrim are forbidden to castrate, by encouraging them to
do so the Yisrael transgresses "Lifne Iver".
(g) (Rava): Shmuel's father ruled that the bulls must be sold
to be slaughtered.
(h) Rejection (Abaye): It suffices that we fine the owner by
forcing him to sell them.
(i) The following is obvious: selling it to one's son (an
adult) is (permitted) like selling it to a stranger.
(j) Question: May he sell it to his minor son?
(k) Answer #1 (Rav Achi): No.
(l) Answer #2 (Rav Ashi): Yes.
(m) Mereimar and Mar Zutra would exchange their bulls with
each other (Tosfos - they did not want the Nochrim to
castrate them - in any case, they did not keep them, lest
people will suspect them).
(a) Question #1 (Rami bar Chama): May one put a thorn in an
animal's mouth so it cannot eat (while working)?
(b) Objection: Surely not, that is muzzling!
(c) Correction - Question #1 (Rami bar Chama): If an animal
has a thorn in its mouth and cannot eat - must one remove
it before working with it?
(d) Question #2: May one set a lion near the animal, so it
will be afraid to eat?
(e) Objection: Surely not, that is muzzling!
(f) Correction - Question #2: If a lion was near the animal,
may one work with it? (Tosfos - if one must remove a
thorn, this does not teach whether one may work with an
animal which will not eat due to something not on the
(g) Question #3: May one set the animal's child nearby, so it
will be reluctant to eat (Some texts - if the animal's
child is nearby, what is the law)?
(h) Question`#4: May one put a skin over the grain, so the
animal will not see what it threshes?
(i) Answer (to Question #4 - Beraisa): Reuven may deny food
to his cow in order that it will eat a lot when working
by Shimon; Reuven may put straw in front of his animal so
it will not eat from what it threshes.
(j) Rejection #1: There, it eats (straw, at least)- if he
puts a skin over, it will not eat anything.
(k) Rejection #2: The Beraisa means, Reuven may put straw in
front of his animal before it threshes so it will not eat
much when it threshes.
(l) Question (R. Yonason): If Reuven muzzled his animal
before it started threshing, what is the law?
1. The Torah forbids muzzling when it threshes - he did
not do this!
(m) Answer (R. Simai): (Kohanim may not drink wine)
"B'voachem" - are they only forbidden to drink while in
the Mikdash, but they are permitted to drink beforehand?!
2. Or - is it forbidden to thresh with a muzzled
1. "U'Lehavdil" (he must be sober to distinguish)!
(n) (Beraisa): If Reuven muzzled a cow or tied diverse
species to a wagon and Shimon made them thresh or lead,
Reuven is exempt and Shimon is liable.
2. Rather, the verse teaches that at the time of
coming, he may not be drunk;
i. Likewise, at the time of threshing, the animal
may not be muzzled!