On March 8, 2022, Harvard Law School's Program in Islamic Law hosted Professor Issam Eido of Vanderbilt University as part of its Islamic Law Speaker Series. Dr. Eido traced the legal canons that were used in early Hanafi sources, beginning with Muḥammad ibn al-Ḥasan al-Shaybānī’s (d. 189/805) works and ending with Abū Zayd al-Dabūsī’s (d. 430/1038) works. These canons, throughout their evolution, have been exposed to multiple procedures, among them adjusting, polishing, changing, or creating a new canon. The talk explored these shifts with some examples. The event was moderated by Program in Islamic Law Research Fellow Dr. Hedayat Heikal.