Fourth pillar of Islamic faith.
The Message of guidance from Allah conveyed to mankind, through His prophets, from time to time, is called the ‘Books of Allah’.
Not only do the Muslims believe in the Holy Qur’an, but also in the ‘Books of Allah’ given to other Prophets. The Qur’an makes reference to five revealed Books including the Holy Qur’an itself.
These are as follows:
Suhuf (Scrolls): given to prophet Abraham, PBUH.
(87:20) check ref.
Taurat (Torah): given to prophet Moses, PBUH.(3:4, 5:45)
Zaboor (Psalms): given to prophet David, PBUH. (4:164)
Injeel (Gospel): given to prophet Jesus Christ, PBUH.(5:47)
Qur’an: given to prophet Muhammad, PBUH. (6:20)
All revealed Books except the Holy Qur’an were partly changed by their followers and are not preserved in their original form.
The text of the Holy Qur’an, has always remained unchanged and preserved in its original form.
Allah SWT said in the Quran :
Surely We have revealed this reminder (The Qur'an); and We will surely preserve it Ourself.
(Quran 15:9)