This work investigates the historical development and structural framework of Islamic law to determine its role as a foundational element of Islamic civilization. Joseph Schacht, a prominent scholar of Islamic jurisprudence, utilizes historical analysis and legal theory to trace the evolution of Sharia from its early origins to its modern application. The text argues that understanding this legal system is essential for comprehending the broader religious and social dynamics of Islamic states. By examining the interplay between tradition and contemporary governance, the author provides a comprehensive overview of the mechanisms that define Islamic legal thought.

Experts frequently cite this work as a foundational text for students and scholars entering the field of Islamic jurisprudence. Readers often note the academic density of the prose, which requires a baseline understanding of legal history to fully appreciate the author's arguments.