Muslims identify the prophets of Islam (Arabic: النبوة في الإسلام) as those humans who were assigned a special mission by God to guide humans. Muslims believe that every prophet was given a belief to worship God and their respective followers believed it as well. Each prophet, in Muslim belief, preached the same main belief, The Oneness of the Divine Creator, worshiping of that One God, avoidance of idolatry and sin, and the belief in the Day of Resurrection. Each came to preach Islam at different times in history and some told of the coming of the final prophet and messenger of God, who would be named "Ahmad" commonly known as Muhammad. Each prophet directed a message to a different group of people, and thus would preach Islam in accordance with the times.
Messengers are prophets whom have been ordered to convey and propagate what God revealed to them. To believe in the Messengers means to believe that God has sent them to creation to guide them, and perfect their life, and their hereafter, and He has aided them with miracles which demonstrate their truthfulness; and that they have conveyed the message of God; and have revealed what they were ordered to reveal to the responsible and accountable individuals; and it is obligatory to respect all of them, and not to discriminate or differentiate between any of them, and they are infallible from minor sins and enormities.
Islamic tradition holds that God sent messengers to every nation. Muslims believe that God finally sent Muhammad to transmit the message of the Quran, the holy book which, according to Islam, is universal in its message. The reason the Muslims believe the Quran is universal and will remain uncorrupted is because they believe that previous Islamic holy books, namely the Torah given to Moses, the Psalms given to David, and the Gospel given to Jesus, were for a particular time and community and because they believe that, even if the books were corrupted, many prophets were still to come who could tell the people of what was correct in the scripture and warn them of corruptions. Muhammad therefore, being the last prophet, was vouchsafed a book which, in Muslim belief, will remain in its true form till the Last Day.