Explanation #1 (Rashi): [The Mizbe'ach] is north of the opening to the Heichal. No part of the Mizbe'ach is in front of Pesach ha'Heichal, except for the Amah of the southern Yesod.

Explanation #2: It is in the north of the Azarah, and five Amos of it were in front of Pesach ha'Heichal, and one of those [Amos] was the southern Yesod;

It turns out that when he leaves the opening, the southern Yesod is in front of him, even with the middle of the opening.

Support (for Explanation #2): Below (58a) it is proven that according to the opinion that the entire Mizbe'ach is in the north, five Amos were opposite the opening;

Source: A Mishnah (Tamid 29a) says that the second Ma'arachah for [coals for burning] the Ketores was distanced four Amos from the corner towards the north. We establish it like R. Yosi, who requires in front of the opening, and he holds that the entire Mizbe'ach is in the north.

Version #1 (Rashi): The Talmidim of R. Yishmael, who were the majority, convinced R. Shimon to say like their Rebbi.

Question: Below (119b) we say that the Siman is "the man convinced the men." R. Shimon, who said that both of these (Menuchah and Nachalah) refer to Yerushalayim, convinced R. Yishmael;

What Siman is this, since sometimes we say oppositely?!

Version #2: It seems that the text in old Seforim is correct. Both of these are the southern Yesod. The men convinced the man. R. Shimon bar Yochai is called "men", because his name and his father's name are mentioned. R. Yishmael, whose name is mentioned alone, is called "man";

Also below (119b) the text says "the men convinced the man." Also the Aruch (Erech Mashach) says so.

Question: Why doesn't it teach pouring Shirayim of Olah? All blood requires the Yesod, like we expound "ha'Olah - to the Mizbe'ach of the Olah", according to Rashi!

Above (37), we say "what is the source that all blood requires Matan Dam on the Yesod?"

Also, in Maseches Tamid (30b), a Mishnah teaches that he poured Shirayim on the southern Yesod!

Answer #1 (R. Moshe of Puntiza): Dam Olah is thrown from a Kli, and sometimes there are no Shirayim (when he threw the blood, all left the Kli). However, Matan Dam Chatas is with the finger. It is impossible that there will not be Shirayim.

Rebuttal: Our entire Sugya proves that there is a Mitzvah to put Shirayim! (Just like one does not throw all Dam Olah the first time, for it should be thrown twice, also the second time he leaves some for Mitzvas Nesinas Shirayim.)

Answer #2 (Ri of Orlins): Since the Tana taught that [Shirayim] of inner [Chata'os] is put on the western Yesod, and also he began with outer [Korbanos] to teach the southern Yesod, the same applies to all of them.

Implied question: He mentioned [the western Yesod] regarding all (i.e. both kinds of) inner [Chata'os. He should have done similarly for all outer Korbanos!]

Answer: Because he began [to teach where Shirayim are put] for inner [Korbanos], and he must teach also about outer, he did not want to cease [in the middle].

Explanation #1 (Rashi): [It is Kodshei Kodoshim] to become Pasul through Yotzei or a Tevul Yom or Mechusar Kipurim, and Me'ilah applies to it.

Question: He should not have mentioned Tevul Yom and Mechusar Kipurim, for these apply to all Kodshim, even Kodshim Kalim!

However, it is fine [that he mentioned] Yotzei and Me'ilah, for Kodshim Kalim are not disqualified through Yotzei, and Me'ilah does not apply to them. (Shitah Mekubetzes - Me'ilah applies to it Kodshei Kodoshim both before and after Zerikah, and even in their lifetime, and the Isur of Yotzei applies to even in Yerushalayim.)

Question: For this reason, [the Tana] should have said about Zivchei Shalmei Tzibur [that they are Kodshei Kodoshim], for Kodshei Kodoshim is not written regarding them!

We learn them below (55a) from a Hekesh to Olah. Just like Olah is Kodshei Kodoshim...

Implied question: Above (52b), why do we need to equate Chatas to Olah regarding the north?

Answer: From this Gezeirah Shavah of Saviv, we cannot learn [the north] for it applies only to Matanos;

Source: A Chatas whose blood entered inside is Pasul, and its blood obligates laundering (if it spilled on a garment), and these do not apply to Olah.

Question: Just like we expounded above (10b) "Osah" - [Dam Chatas] is above, and another is not above, we should also say "Osah" (Chatas) has distinct Matanos, and another does not have distinct Matanos!