Miʿrāj, in Islam, the ascension of the Prophet Muhammad into heaven. In this tradition, Muhammad is prepared for his meeting with God by the archangels Jibrīl (Gabriel) and Mīkāl (Michael) one evening while he is asleep in the Kaʿbah, the sacred shrine of Mecca.
They open up his body and purify his heart by removing all traces of error, doubt, idolatry, and paganism and by filling it with wisdom and belief. In the earliest interpretations of the Miʿrāj, the prophet is then transported by Jibrīl directly to the lowest heaven. But early in Islamic history the story of the ascension came to be associated with the story of Muhammad’s night journey (Isrāʾ) from the “sacred place of worship” (Mecca) to the “further place of worship” (Jerusalem).
The two separate incidents were gradually combined so that chronologically the purification of Muhammad in his sleep begins the sequence. He is then transported in a single night from Mecca to Jerusalem by the winged mythical creature Burāq. From Jerusalem, where the Dome of the Rock now stands, he is accompanied by Jibrīl to heaven, ascending possibly by ladder or staircase (miʿrāj).
Muhammad and Jibrīl enter the first heaven and proceed through all seven levels until they reach the throne of God. Along the way they meet the prophets Adam, Yaḥyā (John), ʿĪsā (Jesus), Yūsuf (Joseph), Idrīs, Hārūn (Aaron), Mūsā (Moses), and Ibrāhīm (Abraham) and visit hell and paradise.
Mūsā alone of all the inhabitants of heaven speaks at any length to the visitors; he says that Muhammad is more highly regarded by God than himself and that Muhammad’s following outnumbers his own. Once Muhammad appears before God—there is some question as to whether he actually saw him—he is told to recite the ṣalāt (ritual prayer) 50 times each day. Mūsā, however, advises Muhammad to plead for a reduction of the number as being too difficult for believers, and the obligation is eventually reduced to five prayers each day.
Source - https://www.britannica.com/event/Miraj-Islam
