Medieval polemicists tested Muhammad as a prophet against falsifiability-style criteria

Evidence

The three signs of prophecy, Petrus says, are “probity of lifestyle, performance of miracles, absolute truth in everything he says.” Muhammad, for Petrus, fails on all three accounts. — John V. Tolan, Saracens, 804

Categorization

• QUESTION: Do these three ‘signs of prophecy’ have an earlier source in Eastern Christian or even Islamic tradition, or is Alfonsi’s tripartite test novel?