Medieval polemic framed Muhammad as heresy plus Judaism combined

Evidence

The classic statement is that of the Cluniac summula: ‘in order that the plenitude of iniquity should come together in Muhammad, and that nothing should be lacking for the perdition of himself or others, to the heretic were added Jews’. — Norman Daniel, Islam and the West, 1043

Categorization

• XREF: The ‘plenitude of iniquity’ cumulative-badness logic parallels how medieval accounts stacked heresies onto each other. — connects to: Medieval polemicists placed Islam midway between Jewish and pagan error