Rosh HaShanah 31a and Rosh HaShanah 31b, the Tehillim the Levi’im sang during the daily sacrifices and Shabbat Mussaf and Minhah, the movements of the Shechinah on the way out of the Temple as the Jewish people’s spiritual state deteriorated, and the nine ordinances of Rabban Yohanan b. Zakkai.
