Peter the Venerable demanded Muslims accept Christian Scripture wholesale or wholly reject it.

Evidence

The Christians - St Thomas Aquinas is the great but lonely exception — wanted to insist that they must. This was most explicit in the Cluniac approach. It was Peter of Poitiers’ view that the Scriptures must be accepted or rejected whole, and his Abbot elaborated this. For him it was quite intolerable that the Muslims should make use of the names of characters in Sacred Scripture without accepting the whole canon. They should entirely reject Scriptures — ex toto reprobandae sunt — if they could not accept them, as they ought, in their entirety. It was their duty to accept the Jewish Prophets, because the Holy Ghost inspired them, whatever their racial origin; and also because Arabs and Jews shared the same inheritance: the descent from Ismael and Isaac; the practice of circumcision inherited from their father Abraham ‘either by innate usages or by laws that have been handed down’; common race, an ‘almost common’ language, style and ‘famous things of literature’. — Norman Daniel, Islam and the West, 314

Categorization

• XREF: The all-or-nothing logic — Muslims must accept the whole Christian canon or reject it entirely — is a medieval ancestor of the modern framing that positions Islam as an illegitimate borrower/unfaithful reader, which Aziz and Razack trace into contemporary racialization.