The Prophet Muhammad receiving his first revelation from the angel Jibril (Gabriel). Miniature illustration on vellum from the book Jami' at-Tawarikh (literally 'Compendium of Chronicles' but often referred to as 'The Universal History or History of the World'), by Rashid al-Din, Tabriz, Persia, 1307 CE, now in the collection of the Edinburgh University Library, Scotland. Representations of the Prophet Muhammad are controversial, and generally forbidden in Sunni Islam (especially Hanafiyya, Wahabi, Salafiyya). Shia Islam and some other branches of Sunni Islam (Hanbali, Maliki, Shafi'i) are generally more tolerant of such representational images, but even so the Prophet's features are generally veiled or concealed by flames as a mark of deep respect.