Twelfth-century Christian polemicists framed Islam as lust-ridden heresy.

Evidence

The Christian authors of these polemical exchanges paint Islam as a heretical deviation from Christianity, attacking Muhammad as a false prophet who feigned a spiritual mission to satisfy his lust and ambition. They attack the Koran as contradictory and illogical. They ridicule Muslim polygamy and the promise of sexual pleasure in heaven. — John V. Tolan, Saracens, 801

Categorization

• XREF: This is the direct medieval root-source for the enduring Muhammad-as-lustful-fraud and Islamic-sexuality tropes traced in existing vault claims.
• ADDENDUM: Grounds the moral-panic essay’s genealogical thread: ridicule of Muslim polygamy and heavenly sexual pleasure as a recurring polemical tactic.