1)
(a)When Rebbi Eliezer told his Talmid, Rebbi Yossi ben Pereida, to add a second Lechi to the Mavoy in which he was sitting, he replied 've'Chi Lesosmo Ani Tzarich'? What does the Gemara try to prove from his reply?
(b)How does the Gemara parry that proof? What else may Rebbi Yossi ben Pereida have meant?
(c)What was Rebbi Eliezer's reply?
1)
(a)The Gemara tries to prove from the words of Rebbi Yossi ben Pereida 've'Chi Lesosmo Ani Tzarich?' - that when his Rebbi Rebbi Eliezer instructed him to place a second Lechi, he must have meant a second Lechi as well as a Korah; otherwise, what did Rebbi Yossi ben Pereida mean by those words - 'Lechayayim with a Korah closes the Mavoy, without it, they don't'?
(b)What Rebbi Yossi ben Pereida may have meant to ask was - 've'Chi Lesosmo bi'Lechayayim Ani Tzarich' ('Do I need to fill up the entire space with Lechayayim?')
(c)Rebbi Eliezer's reply was 'Yisasem, ve'Ein Bekach Kelum'!
2)
(a)In the same Beraisa, Raban Shimon ben Gamliel says that Beis Shamai and Beis Hillel agree that a Mavoy less than four Amos wide does not require any Tikun at all. What does he really mean to say?
(b)What is the minimum width for a Mavoy to require a Tikun?
(c)Rav Nachman rules like Rebbi Eliezer that a Chatzer requires two Chatzer . According to Rav Sheshes, the Chachamim agree with Rebbi Eliezer by the Pasim of a Chatzer. Who is meant by the Chachamim, and why did Rav Nachman then need to rule like Rebbi Eliezer?
2)
(a)When Raban Shimon ben Gamliel says that Beis Shamai and Beis Hillel agree that a Mavoy which is less than four Amos wide does not require any Tikun at all - he means that it does not require a Lechi and a Korah like Beis Shamai, nor two Lechayayim like Rebbi Eliezer, but just a Lechi or a Korah like Beis Hillel.
(b)The minimum width for a Mavoy to require a Tikun - is four Tefachim.
(c)Rebbi agrees with Rebbi Eliezer, but the Rabbanan of Rebbi do not. According to them, one board will suffice by a Chatzer, too.
3)
(a)Rebbi Yochanan rules like Rebbi Eliezer and Rebbi (that a Chatzer requires two Lechayayim). He also says that Pasei Chatzer need to be four Tefachim. Why can we not combine the two statements by simply saying that, for a Chatzer, Rebbi Yochanan requires two Pasim of four Tefachim?
(b)How did Rebbi Zeira resolve Rebbi Yochanan's two statements when he came in from the sea?
(c)How does this conform with the Beraisa 'Ketanah be'Eser, Gedolah be'Achas-Esrei'?
3)
(a)We cannot say that, for a Chatzer, Rebbi Yochanan requires two Pasim of four Tefachim each - in view of the Beraisa that we quoted earlier (9b): 'Ketanah be'Eser, u'Gedolah be'Achas-Esrei' - which means that the two Pasim between them total only six Tefachim (and not eight, as we are currently suggesting in Rebbi Yochanan).
(b)When Rebbi Zeira came in from the sea, he explained that - either one requires one board of four Tefachim, or two of even a Kol Shehu.
(c)The Beraisa of 'Ketanah be'Eser, u'Gedolah be'Achas-Esrei' - goes like Rebbi (who requires two Pasim); and Rebbi in turn, holds like Rebbi Yossi (who requires each Pas to be at least three Tefachim).
Note: The Gemara refers to a Lechi when it speaks about a Mavoy, but calls it a Pas when dealing with a Chatzer. In fact, there is no difference between them (see Tosfos DH 'be'Pasei'). Likewise, I refer to a Lechi sometimes as a plank, and sometimes as a board; this is purely a matter of style - no distinctioon should be drawn between them.
4)
(a)In which case does Rav Yehudah quoting Shmuel, permit a Chatzer with one plank?
(b)What does a regular Chatzer require, according to him?
(c)Which other leniency do Chazal permit by water?
4)
(a)Rav Yehudah quoting Shmuel, permits a Chatzer with one plank - only when the sea flows into the Chatzer (it is one of the lenient rulings that Chazal issued by water).
(b)According to him, a regular Chazter requires either that the majority of the wall still remains standing, or two boards.
(c)Chazal also permitted a suspended wall (that does not reach within three Tefachim of the water) by water.
5)
(a)The Gemara establishes Shmuel, permits a Chatzer with Rov Dofen standing, when the wall was only seven Tefachim, in which case, Rov Dofen is four Tefachim. How does the Gemara try to refute this suggestion (with a statement by Rav Achli)?
(b)Besides answering that Rav Achli himself is a Machlokes Tana'im, what other answer does the Gemara give (to differentiate between a Chatzer and a Mavoy)?
5)
(a)If the remaining wall was seven Tefachim - it would not require a board of four Tefachim, answers the Gemara; three Tefachim plus would suffice. Why? Because Rav Achli rules that an area that is less than four Tefachim wide does not require a Tikun - and if one placed a board of three Tefachim plus would leave a space of less than four Tefachim.
(b)The Gemara's first answer (to refute the previous Kashya and reinstate the answer that the breached wall is only seven Tefachim across) - is that Rav Achli only exempted a space of less than four Tefachim from a Tikun by a Mavoy, but not by a Chatzer. Consequently, a breached wall of seven Tefachim in a Chatzer would need a board of four Tefachim to make up Rov Dofen.
6)
(a)If sea-water enters a Chatzer via a breach in the wall, how wide may the breach be for no Tikun to be required?
(b)What sort of Tikun is necessary if the breach is more than ten Amos, and what does it come to permit?
(c)Why is carrying in this Chatzer is permitted. Is it not a Reshus ha'Yachid which opens into a Karmelis?
(d)Does the above apply even to a Chatzer whose wall is completely broken?
6)
(a)If sea-water enters a Chatzer via a breach in the wall - no Tikun is required, provided the breach is not more than ten Amos wide.
(b)If the breach is more than ten Amos wide - then it requires a Mechitzah of at least ten Tefachim tall. The Tikun is in order to permit filling water from it (according to Tosfos Amud 2 DH 'Hacha', the Gemara is referring to carrying from the house to the Chatzer) but not to carry, which is permitted anyway.
(c)No! It is not a Reshus ha'Yachid which opens into a Karmelis - because we are speaking when part of the wall on either side is still standing up to a height of ten Tefachim (only it is covered by the sea-water).
(d)No! The above does not apply to a wall of a Chatzer that is completely breached. In that case, a breach of less than ten Amos would have the same Din as one of more than ten Amos, and would therefore require a Tikun.
12b----------------------------------------12b
7)
(a)Why does Rav Yehudah say that someone who throws from a Reshus ha'Rabim into a Mavoy with a Lechi, is Chayav, but Patur if it has a Korah?
(b)At this stage, what do we think constitutes a Reshus ha'Yachid according to Rav Yehudah? How many walls does it require?
(c)Rav Yehudah describes the Mavoy as one 'she'Lo Nishtatfu Bah'. What can we deduce from this, and what problem does this present Rav Sheshes with?
(d)Why did Chazal forbid carrying from a house flanking a public Chatzer into the Chatzer?
7)
(a)Rav Yehudah says that someone who throws from a Reshus ha'Rabim into a Mavoy which has a Lechi, is Chayav - because 'Lechi Mishum Mechitzah' (so he has thrown into a Reshus ha'Yachid); but Patur if it has a Korah - because Korah Mishum Heker (so he has not thrown into a Reshus ha'Yachid).
(b)At this stage, we think that a Reshus ha'Yachid, according to Rav Yehudah, requires four walls (both Lekula and Lechumra).
(c)Since Rav Yehudah said 'she'Lo Nishtatfu Bah' - we can infer that, had they made an Eruv, the thrower would be Chayav, even if the Tikun of the fourth wall consisted of a Korah. But since when, asks Rav Sheshes, does the loaf of Eruv Chatzeros transform a Mavoy into a Reshus ha'Yachid (and we even have a Beraisa to this effect)?
(d)Chazal forbid carrying from a house flanking a public Chatzer into the Chatzer - because one is carrying from a private domain into a public one, which resembles carrying from a Reshus ha'Yachid into a Reshus ha'Yachid. They were afraid that, if one were to permit the former, one may come to permit the latter, too.
8)
(a)How does Rav Sheshes amend the words 'she'Lo Nishtatfu Bo'?
(b)How many walls does a Reshus ha'Yachid need according to Rav Yehudah, now?
(c)Rav Yehudah holds 'Lechi Mishum Mechitzah, Korah Mishum Heker. What is Rava's opinion in this matter?
(d)How does Rava explain the Beraisa 'ha'Zorek le'Mavoy, Yesh Lo Lechi, Chayav, Ein Lo Lechi, Patur (implying 'Lechi Mishum Mechitzah')?
8)
(a)Rav Sheshes amends Rav Yehudah's words to read 'Mavoy she'Eino Ra'uy le'Shituf (meaning that it is 'Mefulash'), Hechshero be'Lechi ...'.
(b)According to the new text, a Reshus ha'Yachid will require not four walls min ha'Torah, but three.
(c)Rava maintains 'Zeh va'Zeh (both a Lechi and a Korah) Mishum Heker.
(d)Rava explains 'ha'Zorek le'Mavoy, Yesh Lo Lechi, Chayav' - to mean that if it needs no more than a Lechi (i.e. that it is not Mefulash), then he is Chayav, because min ha'Torah, a Reshus ha'Yachid comprises three walls; 'Ein Lo Lechi, Patur' - that if it needs a Lechi plus something else (i.e. a Tzuras ha'Pesach), then he is Patur, even if the fourth side has a Lechi.
9)
(a)According to Rebbi Yehudah, how would someone who owned a house on either side of the street, be able to rectify that section of road?
(b)Why is this a Kashya on Rava - even from the Rabbanan?
(c)What does the Gemara answer?
(d)We have already learnt that a square Mavoy has the Din of a Chatzer. What Tikun is required to carry inside it, according to Rav Nachman? What mistake did Rebbi Zeira make in this regard?
9)
(a)According to Rebbi Yehudah, someone who owned a house on either side of the street, would be able to rectify that section of road - by placing a Lechi or a Korah on either side of that section.
(b)We see from Rebbi Yehudah, that both the 'Lechi and the 'Korah are because of Mechitzah' (and the Rabbanan argue only whether a Reshus ha'Rabim can be rectified in this way, but not on the function of a Lechi or a Korah) - Consequently, we have a Kashya on Rava (who holds that 'Lechi ve'Korah Mishum Heker') from both Rebbi Yehudah and the Rabbanan. (See Gilyon ha'Shas, as to why the Gemara confines the Kashya to Rava.)
(c)The Gemara answers - that, according to Rebbi Yehudah, min ha'Torah, a Reshus ha'Yachid comprises no more than two walls (so it is possible that the Lechi and the Korah could serve as a Heker, and not as a Mechitzah - like Rava).
(d)According to Rav Nachman - a square Mavoy, like a Chatzer, requires a Pas of four Tefachim.
10)
(a)Is a circular Mavoy permitted by means of a Lechi or Korah?
(b)Shmuel thought that the length of a Mavoy must be at least double its width, if it is to be permitted by a Lechi or a Korah. What did Rav tell him - quoting his uncle?
(c)What was the name of his uncle?
10)
(a)A circular Mavoy, just like a square one, is permitted by means of a Lechi or Korah.
(b)Rav, quoting his uncle, told Shmuel that as long as the Mavoy is longer than it is wide - even by a Mashehu, it retains the Din of a Mavoy, and is permitted by a Lechi or a Korah.
(c)Rav's uncle was called Rebbi Chiya.