(Mishnah): In a place where it is the custom to eat roasted meat on the night of Pesach, one may do so; if the custom is not to eat it, one may not.

In a place where the custom is to light candles on the night of Yom Kippur, one lights; if the custom is not to light, one may not light. One lights in Shuls and Batei Medrash, in dark alleys and over the sick.

(Gemara) Query (R. Ba to R. Imi): Is it also prohibited to eat roasted calf?

Answer: Yes - even roast calf.

Question: Even roast chicken? (Note: These two stages follow the text of the Korban Ha'Edah)

Answer: Yes - even roast chicken.

They thought to even include roasted egg and roast fish.

Rejection (R. Yudan): It only applies to food that was slaughtered.

(Beraisa - R. Shimon ben Elazar): If Yom Kippur occurs on Shabbos, one lights even in a place where the custom is not to light.

R. Simon quoting R''YBL/R. Yosa quoting Rebbi: The Halacha follows R. Shimon ben Elazar.

R.Chiya bar Ba expounded in Teveryah like R. Shimon ben Elazar.

R. Yochanan/R. Shmuel bar Nachman: Those that light are more praiseworthy than those who do not light.

Proof (R. Yirmiyah): This is true as if Yom Kippur occurs on Shabbos, one lights even in a place where the custom is not to light.

Proof (R. Ba and R. Simon): This is true as a man is modest and will not have marital relations to the light of a candle (so the candle prevents him from transgressing this prohibition on Yom Kippur).

Both according to the opinion that one lights and the opinion that one does not light, it is to prevent marital relations. One lights in order that he will be embarrassed and refrain from relations. One does not light in order that he will not see his wife and desire her.

The Beraisa taught that one even lights in Shuls and bathhouses. This is even follows the custom that one does not light.

Query: If Yom Kippur occurs on Shabbos, may one wash pickled and boiled vegetables after the time of Minchah? (It is certainly permitted if Yom Kippur occurs on a weekday.)

Rav prohibited it and R. Elazar permitted it.

Proof (R. Yaakov bar Acha quoting R. Elazar): May one wash pickled and boiled vegetables (if Yom Kippur occurs on a weekday) after the time of Minchah because of danger (that one needs to have food ready immediately after the fast)? If so, surely this should apply on Shabbos as well!

Question (R. Chananya against R. Elazar - Mishnah): If Yom Kippur occurred on Shabbos, the Showbreads (the Lechem HaPanim) are divided in the evening (after Shabbos) - but during in the afternoon, as one may not prepare on Shabbos for afterwards?!

Answer: Dividing the Showbreads is a brief act, and there is a concern that it will get eaten. (However, washing vegetables is a lengthy process and in the meanwhile he will remember that he may not eat them.)

Question (R. Pinchas against R. Elazar- Beraisa): When Yom Kippur occurs on Shabbos, "Shabbason'' commands us to rest; and also when it occurs on a weekday "Shabbason'' commands to rest. If one must rest when Yom Kippur occurs on a weekday, certainly one must rest if it occurs on Shabbos! If so, it is teaching that even acts that one may perform during the week (on Yom Kippur), one must refrain from doing them on Shabbos (on Yom Kippur). This is referring to washing pickled and boiled vegetables....?!

Answer (R. Yaakov bar Zavdi quoting R. Abahu): It appears that one is permitted to prepare vegetables that are usually served cold (they involve a lot of preparation and it will be dangerous to wait after the fast until they are ready). However, it is prohibited to prepare those that are usually served hot, as one could wash them while the water is heating up to cook them.

Objection (R. Mana): If you say that, he will be embarrassed (to show that he wishes to eat them cold - as it looks like he is gluttonous and he wants to eat quickly) and he will refrain from washing them and will come to danger (after the fast when the food is not ready).

R. Ba asked R. Imi if it permitted to wash pickled and boiled vegetables after Minchah and R. Imi responded that it is permitted.

R. Yaakov bar Acha asked R. Chiya and R. Yasa if it is permitted to wash pickled and boiled vegetables after Minchah and he responded that it is permitted.

R. Zeira asked R. Imi if it permitted to ask a gentile who is making Chalitos (a baked item) to also bake for him on Yom Kippur (in order that it be ready for after the fast) and R. Imi responded that it is permitted.

He also asked if he can ask the gentile to bake him Tofin (a dough baked several times) and R. Imi permitted it, but when he ask about asking the gentile to prepare a wick, R. Imi prohibited it. What is the difference between them? Those are for food and this is not.

(Mishnah): In a place where the custom is to do Melachah on Tisha B'Av, one may do so. In a place where the custom is not to do Melachah, one may not do so.

In all places, Talmidei Chachamim do not do Melachah.

R. Shimon ben Gamliel says that everyone can make himself into a Talmid Chacham (for this law).

(Gemara R. Avun/ R''SBL quoting R. Yudan): R. Shimon ben Gamliel said that everyone can make himself into a Talmid Chacham? (This would negate the entire decree. Rather, in a place where the custom is to do Melachah, even Talmidei Chachamim should do so.)