(Beraisa - R. Eliezer): Just like Shechitah is Docheh Shabbos, so Machshirim of Shechitah are Docheh Shabbos.

R. Akiva: No - if you will say that Shechitah, which cannot be done on Erev Shabbos [is Docheh Shabbos], you cannot learn to Machshirei Shechitah , that could be done on Erev Shabbos.

R. Eliezer: Eimurim of [Korbanos] Tzibur disprove this! One could [be Maktir them] on Erev Shabbos, and [if he did not,] they are Docheh Shabbos. What is the difference between Machshirei Shechitah before Shechitah, and Machshirei Shechitah after Shechitah?

R. Akiva You cannot learn from Machshirei Shechitah after Shechitah, for Shechitah was already Docheh Shabbos. Machshirei Shechitah before Shechitah, should they be Docheh?! Shechitah was not yet Docheh Shabbos!

Also, perhaps the animal will be found to be Pasul. It turns out that one was Docheh Shabbos without Shechitah!

Question: What can you say about a baby [to be circumcised? Pesul does not apply!]

Answer: Perhaps the baby will get sick [and the Milah will be postponed]. It turns out one was Docheh Shabbos without Milah!

Question: [According to R. Akiva, who says that Machshirei Shechitah after Shechitah are Docheh Shabbos,] if the Mizbe'ach fell on Shabbos [after Shechitas Pesachim, before Zerikah, he should permit rebuilding it]. Is it not possible to build it on Shabbos? (Surely it is!)

Answer: In other cases, it is proper to build a Mizbe'ach before Shabbos. (It is unlike Haktarah, which cannot be done before.)

Source - Question: Exert yourself [and you will find the answer! If one became Tamei Mes, and] his seventh day was on [Nisan] 14 that fell on Shabbos [why does R. Akiva forbid Haza'ah?] It could not be done before Shabbos!

Answer: In other cases, it is proper to do Haza'ah before Shabbos. (Likewise, he forbids building a Mizbe'ach on Shabbos, for in other cases it could be built before Shabbos. We explained this like MEICHAL HA'MAYIM.)

(Mishnah): One may do all needs of Milah on Shabbos - cutting the foreskin, Pri'ah (exposing the Milah), sucking out the blood (it is dangerous not to do so), putting on a bandage and cumin;

If one did not grind [the cumin] before Shabbos, one chews it with his teeth and puts it on.

If one did not mix wine and oil (this was used to heal) before Shabbos, each is put by itself;

One may not make a 'cloak' for the Ever (a piece of cloth with a hole for the crown to go through. The cloth covers the Ever and prevents the skin pulled back from returning), but one may wrap a rag around it;

If one did not prepare it before Shabbos, one may wrap it on his finger and bring it, even from a different Chatzer.

(Gemara): "Himol Yimol'' teaches about two Milos - both circumcision and Pri'ah are the same (they are Docheh Shabbos). Milah and strands [that are Me'akev] are the same.

Note: Some explain that we expound two Chidushim (Pri'ah and strands) due to the double expression and the change of words. However, below R. Yishmael expounds both from one word! It seems that the two Chidushim are equal. There is no reason to favor one over the other, so we learn both of them.

Question: This is like R. Akiva, who says that [double] expressions are inclusions. According to R. Yishmael, who [does not expound] double expressions, for the Torah speaks in its style [like people do, e.g.] "Haloch Halachta'', "Nichsof Nichsafta'', "Gunov Gunavti'', what is his source?

Answer (R. Yudah bar Pazi): "Az Amrah Chasan Damim l'Mulos'' (plural) teaches about two Milos - circumcision and Pri'ah are the same. Milah and strands are the same.

(Rav): "Himol Yimol'' teaches that if one was born circumcised (without foreskin), we must extract [from that place a drop of] blood for the Bris.

"Himol Yimol'' (one who is circumcised will circumcise) teaches that an Arel (uncircumcised) Yisrael may not circumcise [others], and there is no need to teach that a Nochri Arel may not circumcise.

(R. Levi): It is written "v'Atah Es Brisi Sishmor'' - everyone like you (a Ben Bris, will circumcise).

(Beraisa): A Yisrael may circumcise a Kusi, but a Kusi may not circumcise a Yisrael, for he intends for Har Grizim (his idolatry). R. Yudan says so;

R. Yosi: Where of we find that Milah needs intent? Let him circumcise for the sake of Har Grizim until he dies (the Milah is Kosher)!

A Mashuch (after Milah, skin was stretched to cover the crown) does not circumcise, lest he come to danger [of castration] R. Yudah says so;

R. Yosi (to R. Yehudah): There were many Mashuchim in the days of Bar Koziva (the Romans forcibly did so to Yisraelim in Beitar. Later, Bar Koziva overpowered them,) and all circumcised and lived and fathered sons and daughters! And it says "Es Brisi Hefar'' to include a Mashuch.

A Mashuch, one born circumcised, and one who converted when he was already circumcised, we must extract [from that place] a drop of blood for the Bris.

(Beraisa - R. Shimon ben Elazar): Beis Shamai and Beis Hillel do not argue about one born circumcised, that one must extract a drop of Dam Bris, for it is covered Orlah;

They argue about one who converted circumcised. Beis Shamai say that we must extract a drop of Dam Bris. Beis Hillel say, we need not extract a drop of Dam Bris.

R. Elazar the son of R. Eliezer ha'Kapar says, Beis Shamai and Beis Hillel do not argue about this or this (a baby born circumcised, or one who converted circumcised Mahul. All agree that) he needs Hatafas Dam Bris;

They argue about a baby born circumcised on Shabbos. Beis Shamai say that he needs Hatafas Dam Bris on [the next] Shabbos. Beis Hillel say that it does not (it is done the next day).

(R. Yitzchak bar Nachman citing R. Hoshayah): The Halachah follows the Talmid (R. Elazar the son of R. Eliezer ha'Kapar. We explained this like SHA'AREI TORAS ERETZ YISRAEL.)

A case occurred in front of Rav. He said, since our Mishnah says "for it is covered Orlah'', this teaches that he is a Vadai Arel, and we override Shabbos for him [to extract a drop of Dam Bris].

(R. Avahu): We do not override Shabbos for him, and one must extract a drop of Dam Bris [on a weekday].

A son was born [circumcised] to Rav Ada bar Ahavah. He was handling him [to extract a drop of Dam Bris], and he died.

R. Avin: He became a Patzu'a Daka (castrated, and forbidden to marry a Bas Yisrael. Rav Ada) fasted for him [to be cured, but he was not answered,] and he died.

Rabanan of Kisarin: He became a Kerus Shafchah (another kind of castration). He fasted for him, and he died. (We explained this like RADAL.)

Question (R. Yochanan bar Maryei): If [before Shabbos wine and oil] were mixed below (but not so well), may one return to pour [more wine and oil] on them from above?