This class in Gemarah Rosh Hashanah, 4b-5b, was presented in Teves 5777, January 2017, at Or Chaim Shul, Monsey, NY. It explores the laws of Bal Teacher, the prohibition against delaying the fulfillment of one's promises and pledges of all sorts.
For Source Sheets: http://www.theyeshiva.net/jewish/4052
