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CHARTS FOR LEARNING THE DAILY DAF
brought to you by Kollel Iyun Hadaf of Har Nof
Rosh Kollel: Rabbi Mordecai Kornfeld
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Eruvin Chart #13
Eruvin Daf 83a
"SHI'URIM" WHICH DEPEND ON A LOAF OF BREAD
| One loaf
|| 2/3 of
| 6 Beitzim(3)
| 1/4 loaf
|| 2 Beitzim(3)
|| 1 Beitzah(5)
(1) If one stayed in a contaminated house for the time that it takes to
eat half of a loaf ("Achilas P'ras"), the clothes he is wearing become
Tamei (but he himself becomes Tamei immediately upon entering the house).
(2) According to RASHI, if a person eats this amount of Tamei food, he
becomes Tamei and if he touches Terumah, it becomes Pasul. According to
RABEINU TAM, if a person eats this amount of Tamei food, he does *not*
become Tamei, but he becomes forbidden to eat Terumah. (The Rabanan later
decreed that if a person eats even a *k'Beitzah* of Tamei food, he becomes
Tamei and he makes Terumah Pasul; this was one of the "18 Gezeiros"
(Shabbos 14a; see Tosfos there, and Tosfos here, 82b, DH v'Chatzi).
(3) The Gemara explains that these measures are not exact. Rather, Rebbi
Yehudah shrinks them slightly, and Rebbi Yosi increases them slightly.
Rebbi also increased them, by either 1/20th or 1/80th per Beitzah (RASHI
DH Shi'er). (TOSFOS [83b, DH Shiv'as] and Rashi [Shabbos 15a DH Chamishah
v'Od] appear to understand that when Rebbi, in the Beraisa, says that
1/20th or 1/80th must be added to each Beitzah, he is simply *explaining*
Rebbi Yosi's opinion. However, it seems from RASHI in our Sugya (83a, DH
Kamah) that Rebbi is a new opinion, and he argues with Rebbi Yosi.)
(4) Eight Beitzim makes up a complete loaf of bread, which generally
constitutes two meals. Rebbi Shimon, though, maintains that we are lenient
with regard to making an Eruv and 2/3rds of a loaf suffices to be
considered as two meals.
(5) According to Rebbi Nasan and Rebbi Dosa, this amount includes the
eggshell, and is an exact figure (that is, we do not include any increase
or decrease). According to the Chachamim, this amount is *without* the
eggshell, but is also an exact figure.
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