Some medieval Christian writers treated Muhammad’s prophecy claims with investigative seriousness, not easy dismissal

Evidence

Thus two distinct accounts by Latin writers described Muhammad’s withdrawal into solitary life and the sudden eruption of an abnormal event which had the appearance of divine inspiration. This was to investigate the Prophet’s claim with care and solicitude, not with easy dismissal. — Norman Daniel, Islam and the West, 187

Categorization

• XREF: Contradicts and complicates the vault’s picture of a uniformly hostile civilizational construction of Islam — medieval polemic could be more nuanced and empirical in method than the later modern construction.
• QUESTION: Worth chasing: what later Christian sources switched from this investigative solicitude to wholesale dismissal? A genealogy of that shift would enrich the thread.