Medieval Christians read Muhammad’s human fallibility itself as disproof of prophecy

Evidence

The background of Muhammad’s life, the Arabia into which he was born, his own early life, his call to the prophethood and the circumstances of his death were all presented as demonstrating that he was human, fallible and subject to every discreditable misfortune. Even to have lived in paganism till the age of forty was thought disgraceful. Heretical Christian and Jewish influences explained the content of his teaching; and the manner of revelation alleged of him, and his solution of his immediate, temporary and often personal problems were all thought so suspicious as to amount in themselves to a disproof of the prophetic claim. — Norman Daniel, Islam and the West, 1528

Categorization

• XREF: connects to: Muslims treated Muhammad’s illiteracy as proof of revelation, which Christians inverted