Aquinas attacked Muhammad for lacking miracles, a core trope of anti-Islamic polemic
Evidence
In Summa contra gentiles 1:6, Thomas invokes the miracles performed by Christ as proof of the truth of Christianity; to this he contrasts Muhammad who produced no miracles: Those who introduced the errors of the sects proceeded in contrary fashion, as instanced by Muhammad, who enticed peoples with the 242 β’ Thirteenth-Century Dreams of Conquest and Conversion promise of carnal pleasures, to the desire of which the concupiscence of the ο¬esh instigates. β John V. Tolan, Saracens, 1222