[The canonization of the Koran involved the] attribution of several, partially overlapping, collections of logia [sayings] (exhibiting a distinctly Mosaic imprint) to the image of a Biblical prophet (modified by the material of the Muhammadan evangelium into an Arabian man of God) with a traditional message of salvation (modified by the influence of Rabbinic Judaism into the unmediated and finally immutable word of God).
John Wansbrough