u 3.4 page 811 :
To believe in His inspired Books means those which He revealed to His messengers …
(A. the obligation of belief applies to the original revelations, not the various scriptures in the hands of non-Muslims, which are textually corrupt in their present form.)
Scholars differ as to how many Books there are. Some hold they number 104, and some say otherwise. One is obliged to know four particular Books:
1) the Tawrah (Torah, revealed to our liegelord Musa (Moses);
2) The Injil (Evangel), revealed to our liegelord ‘Isa (Jesus);
3) the Zabur (Psalms), revealed to our liegelord Dawud (David);
4) and the Qur’an, revealed to our liegelord Muhammad.
Belief in Allah’s Messengers
u3.5 page 811 … It is obligatory to know 25 particular messengers:
Adam, Idris (Enoch), Nuh (Noah) Hud, Salih, Lot, Abraham, Ishmael, Isaac, Ya’qub (Jacob), Yusuf (Joseph), Shu’ayb. Harun (Aaron), Musa (Moses), Dawud (David), Sulayman (Solomon), Ayyub (Job), Dhul Kifl (Ezekiel), Yunus (Jonah), Ilyas (Elias), Zakariya (Zacharias), Yahya (John) ‘Isa (Jesus) and Muhammad.