The hadith and hagiography genres were incommensurable across religious lines

Evidence

There is so great a gap between the attitude of the Muslim hadith and that of the Christian tradition of hagiography that this beating on air could continue indefinitely; nothing that Christians said would appeal greatly to anyone but a Christian. — Norman Daniel, Islam and the West, 1428

Categorization

• DEFINE: Contrasts hadith (Islamic prophetic tradition) with hagiography (Christian saint biography) as two genres that imported incompatible evaluative criteria.