Usul al-Fiqh is a discipline that studies the general principles involved in the inference of the laws of fiqh. An in-depth study of Usul al-Fiqh has been a central part of the training of scholars throughout the history of Shi’i scholarship. Following this tradition, students are given a comprehensive grounding in all the theoretical discussions of Usul al-Fiqh based on a traditional curriculum, supplemented by relevant discussions from philosophy of language, hermeneutics, moral philosophy and epistemology. Introductory courses are based on Abd al-Hadi al-Fadli’s Mabadi al-Usul, and Baqir al-Sadr’s Halaqat al-Uwla. This is followed by a close and complete reading of Muhammad Rida Muzaffar’s text Usul al- Fiqh.