Sukkah 41a and Sukkah 41b, when it is possible to redeem and/or purchase shemittah materials so as to relieve them of their shemittah status, R. Yohanan b. Zakkai’s rules to remember the Temple, including why we cannot eat new produce until after the 16th of Nisan, and the idea of owning the lulav on the first day of Sukko
