Medieval Christian polemicists attributed hostile origin myths to the Qur’an

Evidence

Ricoldo also said that Muslims believe only God can explain Q. (this actually is said of certain verses only) (Itin. xxx1); and that Muslims agree that the first author of Q. was the Devil (Disp. xi); it would be interesting to know what sort of agreement he had evidence of. — Norman Daniel, Islam and the West, 1925

Categorization

• QUESTION: What evidence did Ricoldo and later anti-Islamic polemicists have for the claim that Muslims themselves believed Satan authored the Qur’an? Is there any actual Islamic tradition resembling this?
• XREF: connects to: Medieval annotators traced specific Qur’anic verses to Arian and Nestorian heretical origins