Affiliation

Co-editor of the Concordance of the hadith

Biography

He studied Arabic at Leiden under Snouck Hurgronje and Wensinck, and became professor of Arabic and Islamic institutions at Utrecht. After Wensinck's death the Dutch Academy entrusted him in 1940 with editing the Concordance of the hadith; he wrote the preface to its second volume (1941), adjusted its method of arrangement, and helped with it until his death.