(Mishnah): 'Until the rains', or 'until there is rain', [he is forbidden] until the second rainfall comes;

R. Shimon ben Gamliel says, until comes the time of the rainfall.

'Until the rains stop' - he is forbidden until the end of Nisan. R. Meir says so;

R. Yehudah says, it is until Pesach passes.

(Gemara) Question (R. Ze'ira): If he said 'until the rain (singular', what is the law)?

Answer: He is forbidden until another rainfall (the third).

(Mishnah): If one said 'it is Alai to bring Etzim [for the Mizbe'ach], he may not bring less than two logs.

Question (R. Yosi b'Ribi citing R. Ba bar Mamal): 'Harei Alai Etz (singular)' - he brings [only] one log. (This was clear to him; he asked Talmidim or Chachamim - R. SHLOMO SIRILIYO, Hakdamah to Brachos (he'Chelek ha'Sheni, Ba'i).

Answer (R. Lazar): A Mishnah teaches so, that this [log] is a Korban by itself, and this is a Korban by itself;

(Mishnah): And two [Kohanim] had in their hands two logs (each carried one).

Note: TOSFOS (Menachos 106b DH Lo) says that this question was settled in Shekalim (6:4). It seems that his text was like that of the Gra (who deletes from the text 'Korban, Lerabos Es ha'Etzim') or of R. SHLOMO SIRILIYO (whose text expounds the source to bring two logs in the afternoon).

(Beraisa - R. Yosi): Everything dependent on Revi'ah (rainfall, e.g. the Heter for Aniyim to enter orchards) is until the second Revi'ah falls, and everything not dependent on Revi'ah (one who rented a house until the rains) is until the time of the Revi'ah.

(Beraisa - R. Shimon ben Gamliel): If rain fell for seven days without ceasing, there suffices for (is considered) the first and second rainfalls. (He holds that they begin on the 17th and 23rd of Cheshvan.)

Why is it called Revi'ah? It is because it is Rove'a the land (it is like Bi'ah, which enables a woman to become pregnant).

R. Meir holds [that 'until the rains stop' is until the end of Nisan] like he taught elsewhere, and R. Yehudah [who forbids until Pesach passes] holds like he taught elsewhere;

(Mishnah): Until when do we request rain? R. Yehudah says, until Pesach passes. R. Meir says, until the end of Nisan.