MUHAMMAD / محمد simply was the last prophet who preached the same faith (The Oneness of the Divine Creator, Worshiping of that One God, Avoidance of idolatry and sin, Day of Resurrection ) that ADAM,IBRAHIM (Abraham), NUH(Noah),MUSA(Moses), ISA(Jesus) and all the other prophets preached to their people and continued the holy religion. Contrary to other prophets who were sent to specific groups of people, Prophet MUHAMMAD was sent to all mankind.