349. When the Holy One, blessed be He, had foreseen three sinful generations - namely, the generation of Enosh, the generation of the Flood and the generation of the Tower of Babylon - he hid THIS LIGHT to prevent them from using it. The Holy One, blessed be He, gave it to Moses, who used it during the three months left to complete his period of pregnancy, AS HE WAS BORN AFTER SIX MONTHS AND ONE DAY. This is why it is written: "She hid him three months" (Shemot 2:2).
349. וּבְשַׁעֲתָא דְּחָמָא קָדוֹשׁ בָּרוּךְ הוּא דִּיקוּמוּן תְּלָתָא דָרִין חַיָּיבִין, וְאִינוּן: דָּרָא דֶּאֱנוֹשׁ, וְדָרָא דְּטוֹפָנָא, וְדָרָא דְּפַלָּגָה, גָּנִיז לֵיהּ, בְּגִין דְּלָא יִשְׁתַּמְּשׁוּן בֵּיהּ, וִיהַב יָתֵיהּ קָדוֹשׁ בָּרוּךְ הוּא לְמֹשֶׁה, וְאִשְׁתַּמַּשׁ בֵּיהּ תְּלַת יְרָחִין, דְּאִשְׁתָּאֲרוּן לֵיהּ, מִיּוֹמֵי עִבּוּרָא דִילֵיהּ, כְּמָא דְּאַתְּ אָמֵר וַתִּצְפְּנֵהוּ שְׁלשָׁה יְרָחִים.