Qur'an Al-Kareem
Allah, the Exalted, says: "This day, I have perfected your religion for you, completed My Favour upon you, and have chosen for you Islam as your religion." Qur'an 5:3
Allah, the Exalted, says: "And this Qur'an is not such as could ever be produced by other than Allah (Lord of the heavens and the earth), but it is a confirmation of (the revelation) which was before it (i.e. the Taurat {Torah}, and the Injeel {Gospel}), and a full explanation of the Book (i.e. laws, decreed for mankind) - wherein there is no doubt - from the Lord of the 'Alamin (mankind, jinn, and all that exists)"
Qur'an 10:37
Narrated Abu Hurairah (May Allah be pleased with him): The Prophet (Peace Be Upon Him) said: "There was no Prophet among the Prophets but was given miracles because of which people had security or had belief, but what I have been given is the Divine Revelation which Allah has revealed to me. So I hope that my followers will be more than those of any Prophet on the Day of Resurrection."
(Sahih Al-Bukhari