Contrary to popular opinion, the bulk of Islamic law does not come from the Qur’an but rather from hadith, first-hand reports of the prophet Muhammad’s words and deeds, passed from generation to generation. However, with varying accounts often only committed to paper a century after the death of Muhammad, Islamic scholars, past and present, have been faced with complex questions of historical authenticity. Informative and accessible, this wide-ranging introduction provides a detailed exploration of the collection and criticism of hadith and examines the controversy surrounding its role in modern Islam. Complete with a glossary, extensive bibliography, and helpful diagrams, this work is perfectly suited to students, scholars, and the general reader interested in this critical element of Islam.