prepared by Rabbi Eliezer Chrysler of Kollel Iyun Hadaf
Rosh Kollel: Rabbi Mordecai Kornfeld
SUKAH 17 - dedicated by Rabbi Mordecai Kornfeld and his wife in honor of the birth of their daughter, Golda Tzivyah, on Shabbos the 16th of Elul. May Hashem grant them that they may raise their new daughter, along with all their other children, l'Torah l'Chupah ul'Ma'asim Tovim!
(a) We have already learned that at the side of the Sukah, four Amos of Pasul Sechach invalidates the Sukah. How much empty space will invalidate the Sukah at the side?
(b) Bearing in mind this Halachah, what can Dofen Akumah not mean?
(c) The Tana gives three examples of Dofen Akumah. Having stated ...
1. ... the case of the broken ceiling of a house, why did he find it necessary to add that of the covered porch or passageway which surrounds a courtyard?
2. ... the previous two cases, why did he find it necessary to add the case of the Sukah with Pasul Sechach around the side?
(a) According to the Rabanan d'Bei Rav, four Tefachim of Pasul Sechach will invalidate the Sukah in the middle of the Sukah. How did Rabah query them from our Mishnah?
(b) They answered by citing Rav and Shmuel. How did Rav Shmuel explain the Din in the Mishnah permitting up to four Amos Pasul Sechach?
(c) What were the Rabanan d'Bei Rav referring to?
(d) What is the significance of four Tefachim in this regard?
(a) How did Rabah attempt to disprove the Rabanan d'Bei Rav from a Sukah with less than four Tefachim of Pasul Sechach and less than three of space, which is Kasher?
(b) What did they retort?
(a) How does Rabah explain why, although his Kashya is not a Kashya on himself, it is a Kashya on Rabanan d'Bei Rav?
(b) And how does Abaye query Rabah from the case of a small Sukah?
(c) What does Rabah say to that?
(a) The Mishnah in Kelim gives the Shi'ur Tum'ah of cloth as three by three Tefachim, of sack, four by four, of leather, five by five, and of a mat made of platted reeds, six by six. What category of Tum'ah is the Tana referring to?
(b) On what condition will these items combine with one another (if they are sewn together) to become subject to Tum'ah?
(c) Why do they combine to become Tamei, whereas in Rabah's case they do not?
(a) This ruling is based on a statement of Rebbi Shimon in a Beraisa. On what basis do all the above materials share the same Shi'ur, according to Rebbi Shimon?
(b) How does Resh Lakish Amar Rebbi Yanai establish this? Of what use is a square Tefach?
(c) What else might the Tana in Kelim mean when he says 'ha'Mekatze'a mi'Kulan Tefach al Tefach'?
(a) The statement of Rabah, citing the Rabanan d'Bei Rav, currently under discussion, was learned in Sura. The Neherdeans cite a second Lashon in the name of Rav Yehudah. Who was Rav Yehudah citing?
(b) Shmuel learns like the Rabanan d'Bei Rav, who invalidate a plank of four Tefachim in the middle of the Sukah and four Amos at the side. What does Rav say?
(c) How will Shmuel establish the Mishnah, which validates a plank of four Tefachim, to conform with his own opinion?
(a) In the Beraisa that we quoted earlier in the Perek, the Tana Kama rules that two sheets combine, but not two planks. What do the two sheets combine for?
(b) Then why do the two planks combine? Who must be the author of the Beraisa?
(c) What does Rebbi Meir say?
(d) Assuming that the Beraisa is speaking about the middle of the Sukah, how will Rav explain Rebbi Meir according to the second Lashon?
(a) What is the problem with the Beraisa, according to the first Lashon of Rav?
(b) Why is this not a problem according to Shmuel?
(c) How will Rav resolve the problem?
(d) In the Beraisa that we cited earlier, Rebbi Meir invalidates a Sukah comprising planks of less than four Tefachim. What does Rebbi Yehudah say?
(a) In which case does Rebbi Meir concede that the Sukah is Kasher?
(b) Why does this pose a problem on Rav's second Lashon?
(c) How do we answer this Kashya? How does establishing the Beraisa by a Sukah that is exactly eight Amos (forty-eight Tefachim) resolve the problem?