ANSWERS TO REVIEW QUESTIONS
prepared by Rabbi Eliezer Chrysler
Kollel Iyun Hadaf, Jerusalem
Previous dafShabbos 26
The Kormim were people who collected the fish for manufacturing Techeles
(the dark blue dye for the one thread used with the Tzitzis), and the
Yogvim were those who pressed the fish to obtain the dye. Nevuzeradan
wanted the precious Techeles to dye the Emperor's clothes.
(a) Chazal forbade lighting the Shabbos-lights with ...
1. ... Tamei Tevel, because the Torah writes "Mishmeres Terumosai", to
compare Terumah Temei'ah to Terumah Tehorah: just as the Heter to eat
Terumah Tehorah applies only *after* it has been separated, so too, the
Heter to burn Terumah Temei'ah applies only *after* it has been separated,
but not to Tevel;
(b) Tzari (balsam) is the sap of a Kataf (balsam)-tree.
2. ... white paraffin, because (like balsam oil, which we discussed above)
it jumps, and is dangerous to use.
(c) Tzari might also be disqualified from being used for the Shabbos lights
because it is not a derivative of the tree, only from the bark, which, like
tar, does not draw after the wick.
(a) Rebbi Yochanan ben Nuri objects to Rebbi Tarfon, who forbids all oil
except for olive oil, because then, what would they do in towns where only
other kinds of oil were available?
(b) Fish oil is similar to Chelev and tar is an extract of pitch (both of
which, we learnt above, are not Kasher for Shabbos-lights). Therefore,
Rebbi Yochanan needed to mention these two specifically.
(c) Sumchus and Rebbi Yochanan ben Nuri argue about fish oil to which a
drop of other oil has not been added. One of them permits it, the other
holds like Rav Beruna Amar Rav, who requires a drop of Kasher oil to be
added by Chelev (not here) - though we do not know which one is which.
Alternatively, they both agree that fish oil is permitted even without a
drop of other oil being added, and they argue over Chelev (the same
Machlokes as the Tana Kama and the Chachamim on Daf 24b).
(a) When Rebbi Shimon ben Elazar says 'Kol ha'Yotze min ha'Eitz, Ein Bo
Mishum Shalosh Al Shalosh', he means that materials such as hemp and cotton
of three by three fingerbreadths, cannot become Tamei. And by 'Mesachechin
Bo', he is saying that, since they cannot become Tamei, they are eligible
for use as Sechach for one's Succah.
(b) Flax is the one exception to this rule; it is referred to as a tree,
but is nevertheless subject to Tum'as Nega'im.
(c) Tana de'Bei Rebbi Yishmael states that, since the Torah uses the word
"Beged", and then goes on to specify ' wool and linen', by Tum'as Nega'im,
we can learn from there (with a Binyan Av), that by all the other cases of
Tum'ah (Sheratzim, Mes and Shichvas Zera) and by Tzitzis - where the Torah
uses the general term 'Beged', it also means clothes of wool or linen
Now, unless Rebbi Shimon ben Elazar held like Tana de'Bei Rebbi Yishmael,
from where would he know to exclude all other materials from Tum'ah?
(d) When he says 'Yotze min ha'Eitz', he really means *all materials* that
are not wool and linen.
(a) The answer to this question has been included in the previous one.
(b) According to Rava, when Rebbi Shimon ben Elazar said 'Kol ha'Yotzei Min
ha'Eitz, he meant specifically *that*, and not other materials, which can
become Tamei, not like Tana de'Bei Rebbi Yishmael.
(c) Tana de'Bei Rebbi Yishmael agree that all clothes which are three by
three *Tefachim* are subject to Tum'ah.
(a) We learn that a woolen and linen garment of even three by three
finger-breadths is subject to Tum'as Nega'im, from the 'Vav' in
(b) The extra 'Vav' cannot come to include garments of three by three
*Tefachim*, since we know them already, from a Kal va'Chomer from the warp
and the woof (which are subject to Tum'as Nega'im, so how much more so,
*clothes* of three by three Tefachim!).
(c) The reason that the Kal va'Chomer is confined to garments of three by
three Tefachim exclusively, and does not include garments of three by three
finger-breadths, is because the former are fit for rich people as well as
for the poor, whereas the latter are fit only for the poor, but not for the
(d) The Torah stresses "Beged Tzemer u'Fishtim", to preclude clothes of
other materials even if they are three by three Tefachim, so we cannot
include them from the 'Vav', rather than wool and linen clothes of three by