Medieval Christian polemicists denied Islam’s continuity with Judaism and Christianity.

Evidence

Mark explained the Qur’an’s name ‘Alforcan, which means distinct in Arabic, and which is a distinction between the Old Testament and the New, or, as some interpret it, between the profanity of the pagans and the faith which he himself taught’. Mark thought it important to deny the consonance of Islam with the earlier religions from which he said it was derived. — Norman Daniel, Islam and the West, 351

Categorization

• XREF: Connects to Anidjar’s claim that Islam is genealogically positioned as outside the Judeo-Christian line — this is the medieval Christian move that constructs Islam as alien to the West’s own religious ancestry.