創世記 6:16

צהר A LIGHT — Some say this was a window; others say that it was a precious stone that gave light to them (Genesis Rabbah 31:11). ואל אמה תכלנה מלמעלה AND TO A CUBIT SHALT THOU FINISH IT UPWARD — Its covering (roof) slanted upwards so that it narrowed at the top to a cubit, in order that the water should run off on both sides. בצדה תשים THOU SHALT SET [THE DOOR] IN THE SIDE THEREOF — in order that the rain might not penetrate. תחתים שנים ושלישים WITH LOWER, SECOND AND THIRD STORIES — Three stories one above the other: the top rooms for the human beings, the middle ones as cabins for the cattle, and the bottom was for the refuse (Sanhedrin 108b).

צֹ֣הַר ׀ תַּעֲשֶׂ֣ה לַתֵּבָ֗ה וְאֶל־אַמָּה֙ תְּכַלֶּ֣נָּה מִלְמַ֔עְלָה וּפֶ֥תַח הַתֵּבָ֖ה בְּצִדָּ֣הּ תָּשִׂ֑ים תַּחְתִּיִּ֛ם שְׁנִיִּ֥ם וּשְׁלִשִׁ֖ים תַּֽעֲשֶֽׂהָ׃

A window shalt thou make to the ark, and to a cubit shalt thou finish it above; and the door of the ark shalt thou set in its side; with lower, second, and third stories shalt thou make it.