In Islamic tradition, the Isra and Mi'raj are the two parts of a journey that Muhammad took in one night, around the year 621. Many Muslims consider it a physical journey but some scholars consider it a dream or vision. The event is celebrated each year via a festival for families, the Lailat al Miraj, one of the most important events in the Islamic calendar.Muslims bring their children to the mosques, where the children are told the story, pray with the adults, and then afterwards food and treats are served.