A papal polemicist misattributed to Muslims a belief he knew they rejected.

Evidence

The rejection of the crucifixion was violently attacked by Humbert of Romans: ‘although they agree with us in matters to do with the praise of Christ, yet, failing to understand the mystery of the Cross, but abusing it like most vile swine, they think it a fatuity and a scandal to the divine Majesty to confess that the Son of God was crucified … Humbert knew that Muslims did not believe Christ to be Son of God; his theme presumably carried him away, and he must have had in mind I Cor. — Norman Daniel, Islam and the West, 930

Categorization

• ADDENDUM: Supports the ‘Complaints About Immodesty’ / anti-Islam polemic thread as evidence that polemicists distorted rather than engaged the enemy’s actual doctrine.