ANSWERS TO REVIEW QUESTIONS
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous daf Chulin 8
(a) The problem with using a heated knife to Shecht might be - that one
burns the Si'manim, instead of cutting them.
(b) Rebbi Zeira Amar Shmuel nevertheless declares the Shechitah Kasher -
because, in his opinion, the cut precedes the burn.
(c) He is not afraid that the side of the knife will touch the pipe before
the majority has been cut - because as the knife cuts into the pipes, the
sides part before the sides of the knife touch them.
(a) The Mishnah in Nega'im discusses a Sh'chin and a Michvah. When the Tana
gives the maximum time period as one week (as opposed to Se'eis and
Sapachas, where the maximum time period is a fortnight), he means - that if,
after one week no Simon Tum'ah has appeared (and the Sh'chin or the Michvah
remain as they were), the Kohen declares the 'Metzora' Tahor.
(b) The two Simanim that render them Tamei are - two white hairs and the
(c) The Torah divides them into two Parshiyos - to teach us that half a
'G'ris (the size of a bean, which is the minimum Shi'ur for Tzara'as) of one
does not combine with half a G'ris of the other, to render the person Tamei.
(a) Besides a burn caused by fire, 'Michvah' incorporates - anything that
has been heated directly by fire (such as a burning coal, hot ashes or
(b) And the definition of a Sh'chin (which is a derivative of 'Shechunah'
[meaning 'hot']) is - anything which heats the skin that has not been heated
directly by fire (such as a piece of wood or a stone [that strikes a
person], hot peat made of olive peels, or Chamei Teverya [the hot-springs of
(c) When the Beraisa concludes ...
1. ... in the Seifa 'u've'Chol Davar ha'Ba Machmas ha'Or', it comes to
include - Chamei ha'Or (such as water that was boiled on the stove).
(d) Another Beraisa defines Tzara'as on a location where a burn followed a
boil, or vice-versa - as whichever occurred last (since it negates whatever
2. ... in the Reisha 'u've'Chol Davar she'Lo Ba Machmas ha'Or', it comes to
include - lead that was hot from the time it was mined.
(a) The question now arises as to the definition of Tzara'as on a location
which was struck with a hot spit-rod, whether it is considered a Sh'chin or
a Michvah. The She'eilah affects a case where a Sh'chin of half a G'ris,
say, is located immediately beside the location of the stroke (which is also
the size of half a G'ris). If the force of the stroke precedes the burn,
then it creates a Michvah, which will not combine with the Sh'chin; whereas
if the burn came first, then the two half G'risin of Sh'chin will combine.
(b) We refute the proof from ...
1. ... Rebbi Zeira Amar Shmuel, who said 'Chidudah Kodem le'Libunah' (which
is not a proof that the stroke precedes the burn) - because it may well be
that a cut (due to its sharpness) precedes the burn, whereas a regular
stroke does not.
2. ... the Beraisa 'Libein Sh'pud Ve'hikah Bo, Nadun Mishum Michvas Eish' -
for the same reason, since the Tana may well be speaking in a case where the
stroke was delivered with the sharp end of the spit-rod, piercing the skin
of the victim (which will not solve our She'eilah, as we just explained).
(a) We learn from the Pasuk "Abeid Te'abdun es Kol ha'Mekomos" - that
Meshamshei (K'lei) Avodah Zarah are Asur be'Hana'ah.
(b) Rav Nachman Amar Rabah bar Avuhah ...
1. ... permits Shechting with a knife of Avodah-Zarah - because Shechting a
healthy animal is really a Kilkul (since it negates its potential [triple]
use for breeding, plowing and as food), and not Hana'ah.
(c) Rava maintains however, that one may ...
2. ... forbids cutting meat with it - because, having been Shechted, it
stands to be cut into pieces, in which case, doing so, is considered
1. ... not Shecht with it - an animal that is at death's door (whose sole
use is therefore as food).
(d) To explain why the pieces of meat are not forbidden on account of the
grease on the knife, we establish Rava's latter ruling - by a new knife that
has never been used.
2. ... cut meat with it - if it has already been cut into pieces that are
Chashuv (the thigh, the shoulder, the breast), in which case cutting it into
smaller pieces would be considered Kilkul.
(a) Rebbi Akiva and Rebbi Yishmael argue (in Avodah-Zarah) whether a brand
new idol is forbidden or not.
(b) They both agree however - that a new K'li of Avodas Kochavim is
(c) The problem this creates with the way we just established Rava's
statement is - that the knife ought then to be permitted even as regards
Shechting an animal that is at death's door.
(d) We answer that Rava may be speaking in a case where the knife was in
fact, used for Avodah Zarah, but for cutting wood, and not meat.
Alternatively, he may be speaking (even assuming that it was used for
cutting meat) - where it was first Kashered in fire.
(a) According to Rav, if someone Shechts with a knife belonging to a Nochri,
the neck requires peeling. According to Rabah bar bar Chanah - it will
suffice to wash it.
(b) Initially, we establish their Machlokes as to - whether the Beis
ha'Shechitah is hot (i.e. the heat of the Beis ha'Shechitah causes it to
absorb the grease on the knife [Rav]) or cold (Rabah bar bar Chanah).
(c) We conclude however, that both opinions agree that the Beis
ha'Shechitah is ...
1. ... hot. Nevertheless, Rabah bar bar Chanah requires only washing -
because, since the Si'manim are busy exuding blood, they will not absorb any
(d) According to Rabah bar bar Chanah, the Beis ha'Shechitah needs
washing - because of the grease on the knife, which obviously sticks to the
neck of the slaughtered animal.
2. ... cold. Nevertheless, Rav requires the neck to be peeled - because the
pressure of the knife causes the neck to absorb the grease in spite of it.
(a) We can extrapolate from the Lashon 'ha'Shochet be'Sakin shel Nochri' -
that it is only Bedi'eved that one may Shecht with the knife of a Nochri,
but not Lechatchilah.
(b) If one did Shecht - the Beis ha'Shechitah requires peeling (like Rav),
since in a matter concerning a d'Oraysa, we follow the stricter opinion.
(a) If the animal that one Shechted turns out to be a T'reifah, Rav Acha and
Ravina argue over what to do with the knife. One of them says that it
requires Hag'alah in hot water. The other one says - in cold water.
(b) The one holds in hot water - because the knife absorbed some of the fat
of the T'reifah animal; the other one, in cold water - because he holds that
the Beis ha'Shechitah is cold, and (in spite of the pressure of the knife)
did not therefore absorb any fat.
(c) We conclude - that it will suffice to wash it in cold water.
(d) We rule leniently here - because the knife, which is Kasher to begin
with, is hard and will only absorb when there is heat, whereas in the
previous case (with regard to the knife of a Nochri) - the knife is not
Kasher to begin with, and the Beis ha'Shechitah, which is soft, absorbs
(a) The knife will not even require washing in cold water - if there is a
piece of worn out curtain (not a fresh, soft cloth) available with which to
wipe the knife clean.
(b) The one who requires Hag'alah is not concerned that (by the Shechitah of
a Kasher animal), the knife has absorbed ...
1. ... blood - because a hard knife will absorb fat and grease, but not
blood, which is liquid.
2. ... Eiver min ha'Chai - because it only absorbs when the Beis
ha'Shechitah becomes hot, and that takes place only after the Shechitah,
when it is no longer Eiver min ha'Chai.
(a) Rav Yehudah Amar Rav requires a Shochet to have three knives - one for
Shechitah, one for cutting meat and one for cutting Chalavim.
(b) He cuts Chalavim - to sell in the market.
(c) He cannot use the same knife to cut meat and to Shecht - because it is
likely to become defected, and should he then forget to examine it, his
Shechitah will be Pasul without his even being aware of it.
(a) We ask why the Shochet cannot use the same knife to cut both meat and
Chalavim - in which case, he would have to take care to cut the meat first,
and then, after cutting the Cheilev, to wipe the knife clean before cutting
meat with it again (see also Tosfos DH 'Ve'liskin Chada').
(b) We answer that we are afraid that he will forget and cut the Chalavim
first. Despite the fact that he can just as easily forget knife is which,
the advantage of having one knife for meat and one for Chalavim is - that
having two knives will prompt him to make a Si'man to differentiate between
(c) Rav Yehudah Amar Rav also requires two separate dishes for washing the
meat and the Chalavim, because we are afraid that he will forget and wash
the meat after the Chalavim, in which case (despite the fact that the water
is cold) - some fat from the Chalavim that inevitably mixes in the water,
will stick to the surface of the meat.
(a) Ameimar citing Rav Papa forbids placing the flanks with the Cheilev of
the kidneys on top of a piece of meat which is lying on a board - because
the heat generated by the weight (see also Tosfos DH 'Lo Lischof') will
cause the meat to absorb some of the Cheilev.
(b) The flanks themselves, on the other hand, do not become forbidden
because of the Cheilev on top of which they are lying - because a thick
membrane separates them.
(c) That membrane - must be removed from the flanks, because, due to the
Cheilev that is mixed in it, it may not be eaten.
(d) We prohibit placing the flanks on top of the piece of meat, in spite of
the membrane that covers all Cheilev - because that membrane, which is thin,
becomes ruptured through the handling of the butcher, and cannot therefore
prevent the meat from absorbing some of the Cheilev.