This investigation of Abu-al-Faraj Ibn al-Jawzi’s al-Wafa bi Fada'il al-Mustafa, according to the Leiden manuscript by one of Germany’s foremost Semiticists, is essential reading for anyone interested in Arabic history and literature. Ibn al-Jawzi was a twelfth-century jurist and perhaps the most prolific writer in the history of Arabic literature. Al-Wafa bi Fada'il al-Mustafa (Detailed Accounts of the Chosen Prophet), is a large work on the biography of the prophet Muhammad. In this manuscript study, Brockelmann analyzes several aspects of this composition, including citations of this work by other notable Islamic writers.