European anti-Islamic polemic derived Islam from Christian and Jewish heresy

Evidence

The sudden success of heretical Christianity and Talmudic Judaism which such a picture supposed the rise of Islam to represent fitted conveniently the idea of a more or less Christian pre-Islamic Arabia, but it equally well suited that of an ignorant, undiscriminating and wholly obtuse heathenism. — Norman Daniel, Islam and the West, 481

Categorization

• XREF: Directly connects to vault work on Islam as West’s constitutive outside: this medieval ‘Islam came from Christian/Jewish heresy’ trope is the early ancestor of arguments tracing Islam’s essence back to something non-Muslim. Links to Anidjar’s genealogy of Jew-Arab as constructed enemies.