Islamic scripture (5)
I believe the answer is:
koran
'islamic scripture' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for koran that I've seen before include "Sacred texts of Islam" , "Islam's sacred book" , "Sacred book of Islam with revelations of Muhammad" , "The Muslim Scriptures in Arabic" , "Sacred Islamic writings" .)