This third edition of the best-selling title Principles of Islamic Jurisprudence has been completely revised and substantially enlarged. In this work, Prof Kamali offers us the first detailed presentation available in English of the theory of Muslim law (usul al-fiqh). Often regarded as the most sophisticated of the traditional Islamic disciplines, Islamic Jurisprudence is concerned with the way in which the rituals and laws of religion are derived from the Qur"an and the Sunnah8212;the precedent of the Prophet. Written as a university textbook, Principles of Islamic Jurisprudence is distinguished by its clarity and readability; it is an essential reference work not only for students of Islamic law, but also for anyone with an interest in Muslim society or in issues of comparative Jurisprudence.