וַיַּ֣עַשׂ אֱלֹהִים֮ אֶת־הָרָקִיעַ֒ וַיַּבְדֵּ֗ל בֵּ֤ין הַמַּ֙יִם֙ אֲשֶׁר֙ מִתַּ֣חַת לָרָקִ֔יעַ וּבֵ֣ין הַמַּ֔יִם אֲשֶׁ֖ר מֵעַ֣ל לָרָקִ֑יעַ וַֽיְהִי־כֵֽן׃
And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament; and it was so.
Find Mishnaic references to Genesis 1:7: , passages from the 63 tractates of the Mishnah.