Knowing the occasions of the revelation (the reasons for the revelation of the surahs and verses of the Holy Qur’an), by 9th-century Andalusian scholar Sheikh Muhammad bin Ibrahim al-Qumarishi al-Andalusi. In this excellent work the author cites the Asbab al-Nuzal of : al-Wahidi, Al-Razi, Ibn Ishaq, Ibn 'Atiyah, Ibn Juzay, al-Qurtubi, and other leading sources.