Muhammad (PBUH), born in Mecca c. 570 CE, is Islam's final prophet. He received divine revelations forming the Quran, the holy book of Islam. He preached monotheism, unified Arabia, and his teachings (Sunnah) guide Muslims worldwide. He passed away in Medina in 632 CE. Muhammad PBUH life is a model of faith, compassion. Quran, Sunnah guide Muslims.