The books that muslims believe in are four major books; Zaboor (Psalms), Tawrat (Torah), Injeel (Gospels), and Qur'an.

The first, Zaboor, is believed to have been revealed to Daawood (David) Alayhi AsSalam (Peace be upon him)

The second, Tawrat, was revealed to Moossa (Moses) Alayhi AsSalam (Peace be upon him)

The third, Injeel, was revealed to Iissa (Jesus) Alayhi AsSalam (Peace be upon him)

The last, Qur'an, was revealed to Mohammed (SAW) Alayhi AsSalam (Peace be upon him).

In addition to the books mentioned above, muslims believe that there are other scriptures, which were revealed to various Prophets but were not complete books.