The Miraj forms part of the Night Journey that the prophet of Islam, Muhammad took during a single night around the year 621 CE. In the journey, Muhammad travels on the steed Buraq to 'the farthest mosque' where he leads other prophets in prayer. He then ascends to heaven where he speaks to God, who gives Muhammad instructions to take back to the faithful regarding the details of prayer. 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.