This in-depth study presents a detailed analysis and critique of the classic Western work on the origins of Islamic law, Schacht's Origins of Muhammadan Jurisprudence. Azami's work examines the sources used by Schacht to develop his thesis on the relation of Islamic law to the Qur'an, and exposes fundamental flaws in Schacht's methodology that led to the conclusions unsupported by the texts examined. This book is an important contribution to Islamic legal studies from an Islamic perspective.