(a) Question (Beraisa): Tzara'as can come "In a house of your inheritance", but not in Yerushalayim, since Yerushalayim was not divided among the Shevatim;
(b) R. Yehudah says that this only applies to Makom Mikdash.

1. Inference: Batei Kenesiyos and Batei Medrashos can get (Tum'as) Tzara'as.
2. If Batei Kenesiyos of a big city are considered public property, why can they get Tzara'as?

(c) Answer: Rather, R. Yehudah exempts only 'Makom Mekudash' (this includes Batei Kenesiyos).
(d) Question: What do they argue about?
(e) Answer: The first Tana holds that Yerushalayim was not divided among the Shevatim; R. Yehudah holds that it was. The following Tana'im also argued about this. The Tana of Beraisa #1 holds that Yerushalayim was split among the Shevatim, and the Tana'im of Beraisa #2 hold that it was not:

1. (Beraisa #1): Yehudah's portion included Har ha'Bayis, the chambers and Azaros of the Mikdash. The portion of Binyamin included the Ulam, the Heichal, and the Kodesh ha'Kodoshim.
2. A strip extended from Yehudah's portion into Binyamin's. The Mizbe'ach was built on it.
3. Binyamin always desired that strip. This is why he merited to host the Shechinah.
4. (Beraisa #2): We don't rent houses in Yerushalayim, since the houses are not owned.
5. R. Eliezer says, even beds may not be rented (normally. However, Chachamim enacted that) hosts forcibly take the skins of Korbanos (of Todos and Shelamim of their guests, in order that they will happily lend beds - Ritva Yoma 12a).
6. (Abaye): This shows that it is proper for one to leave his empty bottles and skins (of animals he slaughtered) for his host.

(a) (Rava): Our Mishnah discusses a Beis ha'Keneses that was not sold by the seven Tuvei ha'Ir (overseers of the city) in the presence of the residents. If the overseers sold it in front of the residents, the money may be used for anything, even to buy beer to drink!

(b) Ravina owned the ruins of a Beis ha'Keneses. He asked whether he may plant on it.
(c) (Rav Ashi): Buy it from the Tuvei ha'Ir in front of the city residents, then you may plant on it.
(d) (Rav Chisda): One may not destroy a Beis ha'Keneses until a new one has been built.
(e) Question (Rami bar Aba): This is lest people neglect to build a new one. If I started building a Beis ha'Keneses, may I take beams from an old Beis ha'Keneses?
(f) Answer (Rav Papa and Rav Huna brei d'Rav Yehoshua): You may not.
(g) (Rava): One may sell or trade a Beis ha'Keneses, but it is forbidden to rent it or use it for collateral.
(h) Question: What is the reason?
(i) Answer: (In the former cases its Kedushah transfers to the money or barter. In the latter cases) the Beis ha'Keneses retains its Kedushah.
(j) (Likewise,) one may sell or trade bricks of a Beis ha'Keneses, but it is forbidden to rent them or use them for collateral.
(k) This applies only to old bricks (they were built into the wall, and the Beis ha'Keneses fell). New bricks (that were not yet built into the wall) are permitted (they have no Kedushah).

1. Even the opinion that says that designation is important says so only in cases like a garment woven to use as shrouds (it is forbidden). Our case is like thread spun to weave (into shrouds); all permit it.

(l) Rav Acha and Ravina argued about whether or not the Kedushah of a Beis ha'Keneses goes away if it is given as a gift. (Rif - they argue about a gift by the Tuvei ha'Ir in front of the residents. Otherwise, all agree that it is forbidden. Ritva - all agree that if the Tuvei ha'Ir gave it away in front of the residents, it is permitted. They argue about when it was not given this way.)

1. One says that it does not, because there is nothing to which the Kedushah can transfer;
2. The other says that one gives a gift only if he received, so giving is like selling.

(a) (Beraisa): Tashmishei (things which were used for a) Mitzvah may be discarded, such as a Sukah, a Lulav, a Shofar, and Tzitzis;
(b) Genizah is required for Tashmishei Kedushah, e.g. sacks for Seforim, Tefilin, and Mezuzos, cases of a Sefer Torah or Tefilin, and Tefilin straps.
(c) (Rava): I used to think that a Bimah is Tashmish of Tashmish (of Kedushah, for the Sefer Torah rests on a cloth on the Bimah, so it is permitted). I saw that people (sometimes) place a Torah on a Bimah (with nothing in between), and I realized that it is Tashmishei Kedushah.
(d) (Rava): I used to think that the inner curtain of an Aron is Tashmishei Tashmish. I saw that people fold it under the Sefer Torah, and I realized that it is Tashmishei Kedushah.
(e) (Rava): An Aron that is coming apart may be made into a smaller Aron, but not into a Bimah.
(f) (Rava): Worn out curtains (of the Aron) may be made into covers for a (full) Sefer Torah, but not for a single Chumash.
(g) (Rava): Sacks for Chumashim and chests for Seforim are Tashmishei Kedushah, and they require Genizah.
(h) Objection: This is obvious!
(i) Answer: One might have thought that they are merely for protection; Rava teaches that this is not so (they are for honor).
(j) There was a Beis ha'Keneses open to a room with a Mes. Kohanim wanted to enter to pray.

1. Rava: The Aron is a Kli Etz made to be stationary, therefore, it is not Mekabel Tum'ah, so it does not allow Tum'as Mes to pass. Move the Aron (to the opening)!
2. Question (Rabanan): Sometimes it is moved with a Sefer Torah on it, hence it is a Kli that is moved (it is Mekabel Tum'ah)!
3. Retraction (Rava): If so, we have no solution.

(k) (Mar Zutra): Worn-out covers of Seforim may be made into shrouds for a Mes Mitzvah. This is their Genizah!
(l) (Rava): A worn-out Sefer Torah is buried next to a Chacham, even a Chacham who learned only Halachos (Rashi - Mishnayos and Beraisos).

1. (Rav Acha bar Yakov): It should be put it earthenware, so it will last - "U'Nsatam bi'Chli Chares Lema'an Ya'amdu Yomim Rabim."