Concordance Et Indices de la Tradition Musulmane (8 Vols): Al-Mu'djam Al-Mufahras Li-Alfāẓ Al- Ḥadīth Al-Nabawī Tapa blanda - 1992

Arent Jan Wensinck (1882-1939) studied Semitic languages in Leiden and wrote a doctoral dissertation on 'Muḥammad and the Jews in Medina' with Christiaan Snouck Hurgronje. After having taught Hebrew at grammar schools and Classical Syriac and Aramaic at Utrecht University, Wensinck was appointed to the chair of Hebrew at Leiden University in 1912. Fifteen years later, he succeeded his former teacher Snouck Hurgronje as head of the Arabic department in Leiden, a position he held until his death in 1939. In addition to his work on the Concordance, his magnum opus, Wensinck was one of the editors-in-chief of the first edition of the Encyclopaedia of Islam. From 1932, Johan Peter Mari Mensing (1901-1951) assisted Wensinck with the publication of the Concordance and continued working on it after Wensinck's death. After having finished his doctoral dissertation on aspects of Hanbali law in 1936, Mensing taught modern Arabic as a private tutor in Leiden. From 1948 until his death in 1951, Mensing was an endowed professor of Muslim institutions and Arabic at Utrecht University.