He comes from a noble family and is well-known for his honesty and upright character.
According to Muslim belief, at the age of 40, Muhammad is visited by the angel Gabriel while on retreat in a cave near Mecca. The angel recites to him the first revelations of the Quran and informs him that he is God's prophet. Later, Muhammad is told to call his people to the worship of the one God, but they react with hostility and begin to persecute him and his followers.
After enduring pbullying in Mecca, Muhammad and his followers migrate to the nearby town of Yathrib (modern-day Medina), where the people there accepted Islam. This marks the "hijrah" or "emigration," and the beginning of the Islamic calendar. In Medina, Muhammad establishes an Islamic state based on the laws revealed in the Quran and the guidance coming to him from God. Eventually he begins to invite other tribes and nations to Islam.
Rededicates it to the worship of God alone.
The Muslim community elects his father-in-law and close associate, Abu Bakr, as caliph, or successor.
Muslims enter Egypt and rout the Byzantine army. Muslims consider their conquest as the liberation of subjugated people, since in they were under oppressive rule.
Imam Ali is killed, bringing to an end the rule of the four "righteous caliphs": Abu Bakr, Umar, Uthman, and Ali. This also marks the beginning of the Umayyad rule.