וּבְנֵ֣י צִיּ֗וֹן גִּ֤ילוּ וְשִׂמְחוּ֙ בַּיהוָ֣ה אֱלֹֽהֵיכֶ֔ם כִּֽי־נָתַ֥ן לָכֶ֛ם אֶת־הַמּוֹרֶ֖ה לִצְדָקָ֑ה וַיּ֣וֹרֶד לָכֶ֗ם גֶּ֛שֶׁם מוֹרֶ֥ה וּמַלְק֖וֹשׁ בָּרִאשֽׁוֹן׃
錫安的子民哪，你們要因永恆者你們的上帝歡欣喜樂，因為祂賜給你們教導者，引導你們行公義；祂又為你們降下雨水，就是秋雨和春雨，在正月降下。
Mishnah Ta'anit
They don’t pray for rain except close to the rainy season. Rabbi Judah says: One who goes down before the ark on the last day of Sukkot the last one mentions [rain], the first does not; on the first day of Pesah, the first mentions, the last does not. Up until when do they request rain? Rabbi Judah says: Until Pesah is over. Rabbi Meir says: Until Nissan is over, as it says, “Now He makes the rain fall in the first month, early rain and late rain” (Joel 2:23).