This shiur explains the halachic status of an esrog that grew during the shmitah year, the problem with buying such an esrog, and how to overcome it. There is also a short description of the mitzvah of Hakhel at the end of the shiur (the last 4 minutes). This shiur is by Rabbi Menachem Schrader, Founding Director of the OU’s Jewish Learning Initiative on Campus (OU-JLIC). The shiur was delivered as a conference call with OU-JLIC Rabbis and Educators from over 20 college campuses.