We believe, in general, that all prophets follow the right path, are infallible and pure, and that to deny their prophecy, to revile or deride them, results in a loss of faith and insincerity in belief. For the denial of them entails the denial of our prophet Muhammad (S.A) who spoke concerning them and confirmed them.
As for the prophets whose names and shara'i' (pl. of shari'ah) are well-known, i.e. Adam, Dawud, Sulayman, Musa, 'Isa and others are mentioned in the Qur'an, we must believe in each of them. In truth, one who denies one of them has denied them all, and he has especially denied the prophethood of our own prophet.
Likewise, we must believe in their books and in what has been revealed to them. But the Torah (Turah-the Book of Mus (A.S)) and the Gospels such as we have them in our hands now have been proved not to be what was revealed to Musa and' Isa (A.S). Some persons who were confused by their own desires and by covetousness have changed them by adding to them, so that most of them, or all of them, were compiled after their time by some of the followers of the prophets Musa and' Isa (A.S).