570- 632 CE - Muhammad was an orphan born in Mecca who became the principal prophet of the religion of Islam. Muhammad was a caravan manager as an adult and came into money when he married his employer, a rich widow. Muhammad began to experience visions in his middle age and believed these visions were inspired by Allah. Muhammad believed that he was receiving a new covenant from Allah and his teachings provide a further extension to the Hebrew and Christian religions. Muhammad's visions and revelations were written down in the Quran.