Four revealed books mentioned in the Qu’ran are

The four revealed books mentioned in the Qu'ran are the Injil, Tawrah, Zaburah, and Qu'ran. - The Injil (Gospel) is the book that was revealed to Prophet Jesus (peace be upon him) and it contained the guidance for the followers of Prophet Jesus. - The Tawrah (Torah) is the book that was revealed to Prophet Moses (peace be upon him) and it contains the guidance for the followers of Prophet Moses. - The Zaburah (Psalms) is the book that was revealed to Prophet David (peace be upon him) and it contains the guidance for the followers of Prophet David. - The Qu'ran is the final and complete book of guidance revealed to the last Prophet Muhammad (peace be upon him) for the entire humanity. All of these books were revealed by Allah (God) and they contain guidance and teachings for the believers to live a righteous life and to achieve success in this world and the hereafter.