Babylonian Talmud, Sanhedrin 108b
תלמוד בבלי, מסכת סנהדרין, דף ק''ח:
"תחתיים שנים ושלישים תעשה"(בראשית ו') תנא תחתיים לזבל אמצעיים לבהמה עליונים לאדם
'With lower, second, and third stories you shall make it [the ark].' We are taught: the lower level was for refuse, the middle level for animals, the upper level for people. [translation by Gideon Aronovich]

Suggested Discussion Questions:

What can we learn from this ordering of the levels of Noah's ark?

Time Period: Rabbinic (Maccabees through the Talmud)