Ab? al-Q?sim Mu?ammad ibn ?Abd All?h ibn ?Abd al-Mu??alib ibn H?shim, also transliterated as Muhammad, was a religious, political, and military leader from Mecca who unified Arabia into a single religious polity under Islam. He is believed by Muslims and Bahá'ís to be a messenger and prophet of God and, by most Muslims, the last prophet sent by God for mankind. Non-Muslims regard Muhammad as the founder of Islam. Muslims consider him to be the restorer of an unaltered original monotheistic faith of Adam, Noah, Abraham, Moses, Jesus, and other prophets.
Born in about 570 CE in the Arabian city of Mecca, he was orphaned at an early age and brought up under the care of his uncle Abu Talib. He later worked mostly as a merchant, as well as a shepherd, and was first married by age 25. Being in the habit of periodically retreating to a cave in the surrounding mountains for several nights of seclusion and prayer, he later reported that it was there, at age 40, that he received his first revelation from God. Three years after this event Muhammad started preaching these revelations publicly, proclaiming that "God is One", that complete "surrender" to Him is the only way acceptable to God, and that he himself was a prophet and messenger of God, in the same vein as other Islamic prophets.