Explanation: There were gardens and orchards there.

Source: It says "Sham Yizbechu Zivchei Tzedek." Theft does not help for a Korban.

Explanation #1: These are houses of idolatry. They are called Teratariyos, an expression of disgrace. Karkasi'os is a privy in Arabic.

Objection: It is difficult to say that one may learn Torah in those indecent places!

Rather, surely they will be desolate soon in our days!

Explanation #2: These are houses in which idolaters gather to meet.

Explanation: If they read the four Parshiyos in Adar Rishon, for they still did not know that they need to be Me'aber (make a second Adar), and later they were Me'aber the year, they need not read them in Adar Sheni.

Explanation: It seems that he infers from the extra [clause in] the Mishnah that all Mitzvos that apply in the Sheni apply in the Rishon. This implies l'Chatchilah.

Custom: Some have the custom to make days of Mishteh and Simchah on the 14th and 15th of Adar Rishon.

Support: The flow of our Mishnah connotes like this. It says [the two Adars differ] "only [regarding] Mikra Megilah and Matanos Aniyim."

Inference: Regarding Mishteh u'Simchah, they are the same.

Rejection: We say in the Gemara "regarding eulogies and fasts, they are the same. This implies that there is no Mishteh u'Simchah [in Adar Rishon].

Support: You are forced to say that they do not depend on each other. If they depended on each other, the Gemara should have taught that Mishteh u'Simchah apply [in Adar Rishon], and automatically eulogies are forbidden!

The days in Megilas Ta'anis on which eulogies are forbidden have no Mishteh u'Simchah.

Pesak: This is the Halachah. One need not be stringent to make Mishteh u'Simchah in Adar Rishon.

Citation (Zevachim 51a): Shirei ha'Dam were poured on the western Yesod of the Mizbe'ach.

Citation (cont.) Inference: This is because the verse says "El Yesod Mizbach ha'Olah."

Question: Why do we need a verse? We should know this because Ein Ma'avirin Al ha'Mitzvos!

When he leaves Pesach ha'Heichal, which is in the west, he encounters the western Yesod first!

Answer #1: Some say that Ein Ma'avirin Al ha'Mitzvos applies only when there are two Mitzvos to do. He should do first the one that he encounters first;

Rejection: Here (Mikra Megilah) there is only one Mitzvah, and even so we say that the reason [to do it in Adar Rishon] is Ein Ma'avirin!

Answer #2 (Rabbeinu Yehudah): If not for the verse, one might have thought that Ein Ma'avirin l'Chatchilah, but b'Di'eved it is permitted;

We need the verse to forbid [even] b'Di'eved.

Answer #3: There, due to Ein Ma'avirin, we would know only that the entire western side of the Mizbe'ach is Kosher, but we would not know that we require the Yesod;

Therefore, we need the verse to teach about the Yesod.