Rabbi Shimon explains about the contraction as the waters receded and the relevance to the water libation during the second, sixth and seventh days of Sukkot. He compares the mountains of Ararat to the mountains of darkness and the curses of the Other Side, that gradually become visible as the waters recede. We hear about the sacrifices of the rams and lambs and bullocks and their effect on the seventy heathen nations for whom they are offered. Lastly we are reminded how Yisrael break through all the Klipot to find joy on the eighth day of assembly, Shmini Atzeret. In this the Other Side has no part.