Medieval critics faulted Islam for lacking miracles and coherent scripture

Evidence

To disqualification on account of his ‘evil life’ were added Pedro’s other two points: the shameful and contradictory teaching of the Qur’an and its not being confirmed by miracles. Except to point out Muhammad’s failure to foretell his own successors, the whole of the third book would have been devoted to the absence of confirmatory miracles. — Norman Daniel, Islam and the West, 388

Categorization

• XREF: connects to: Aquinas denied Islam any authority because it lacked miracles and true documents