Belief in the scriptures sent/revealed by Allah
A Muslim believes in all original scriptures and revelations of Allah. Muslims believe in the scriptures that were given to previous messengers; for example David received the Zabur (Psalms), Moses the Torah and Jesus the Injeel (Gospel).
However, Muslims do not consider the scriptures revealed before the Qur’an, which are presently in circulation in various editions and versions, to be an accurate representation of their original revealed form.
According to the Qur’an, people have distorted these scriptures for their own worldly gain. These distortions have occurred in many different ways, such as additions or deletions of text or changes in the meaning or the language. These distortions were adopted over time and what remains is a mixture of the original divine text with man made interpretation and contamination.
The Quran is the last testament in the series of divine revelations from Allah, and Muslims recite and turn to for guidance in all aspects of their life. It comprises the unaltered and direct words of Allah, revealed through the Angel Gabriel, to the final Prophet, Muhammad (pbuh) some 1400 years ago. The Quran is unique because it is the only revealed book that exists today in the precise form and content in which it was originally revealed. The Quran is unrivalled in its recording and preservation. The astonishing fact about this scripture is that it has remained completely unchanged over the past fourteen centuries, a fact that is attested to by both non-Muslim and Muslim scholars alike. There are no versions of the Quran and every copy in the world remains identical, word for word in its original language Arabic. Muslims to this day continue to emphasize the importance of memorizing the Quran word by word, as a whole or in part, recognizing that it is the Speech of God and not a book written by Muhammad (pbuh) himself.
Quran does not contain the words of Muhammad, but of Allah. The Quran is not also Muhammad's interpretation of the words or message of Allah. The Quran is simply the words of Allah
No divine scripture exists today in the original language it was revealed in, except the Quran.
After the Quran, no more scriptures will be revealed by God. Just as the Prophet Muhammad is the last prophet, the Quran is the last scripture.