Taanit 10a
תענית י׳ א
Taanit 10a:11-12
The Mishnah establishes that the request for rain begins on the third of Marḥeshvan, while Rabban Gamaliel says it begins on the seventh; the Gemara explains that the later date accommodates pilgrims returning from Jerusalem after Sukkot, so they will not encounter rain on the roads.
מַתְנִי׳ בִּשְׁלֹשָׁה בִּמְרַחְשְׁוָן שׁוֹאֲלִין אֶת הַגְּשָׁמִים. רַבָּן גַּמְלִיאֵל אוֹמֵר: בְּשִׁבְעָה בּוֹ, חֲמִשָּׁה עָשָׂר יוֹם אַחַר הֶחָג. כְּדֵי שֶׁיַּגִּיעַ אַחֲרוֹן שֶׁבְּיִשְׂרָאֵל לִנְהַר פְּרָת. גְּמָ׳ אָמַר רַבִּי אֶלְעָזָר: הֲלָכָה כְּרַבָּן גַּמְלִיאֵל. תַּנְיָא, חֲנַנְיָה אוֹמֵר: וּבַגּוֹלָה, עַד שִׁשִּׁים בַּתְּקוּפָה. אָמַר רַב הוּנָא בַּר חִיָּיא אָמַר שְׁמוּאֵל: הֲלָכָה כַּחֲנַנְיָה.
MISHNA: On the third of the month of Marḥeshvan one starts to request rain by inserting the phrase: And give dew and rain, in the blessing of the years, the ninth blessing of the Amida. Rabban Gamliel says: One starts to request rain on the seventh of Marḥeshvan, which is fifteen days after the festival of Sukkot. Rabban Gamliel explains that one waits these extra four days so that the last pilgrim of the Jewish people, who traveled to Jerusalem on foot for the Festival, can reach the Euphrates River without being inconvenienced by rain on his journey home. GEMARA: Rabbi Elazar said: The halakha is in accordance with the opinion of Rabban Gamliel, that one does not begin to request rain until the seventh of Marḥeshvan. It is taught in a baraita that Ḥananya says: And in the Diaspora one does not begin to request rain until sixty days into the season, i.e., sixty days after the autumnal equinox. Rav Huna bar Ḥiyya said that Shmuel said: The halakha is in accordance with the opinion of Ḥananya.
