The full documented list of Muslim authors who wrote that blacks were cursed to slavery by Noah's "Curse of Ham" actually does go all the way to the time of the prophet (Ibn Ata), according to the sources present in the article so far.  You don't dispute that it is a documented teaching of Mediaeval Muslim scholars, you seem to be arguing that we all have an obligation not to report this fact because it doesn't fit in with your teaching.  But the way wikipedia works is, if Mediaeval Muslim scholars taught such a thing, and it is documented, then we are allowed to say that Mediaeval Muslim scholars taught such a thing and that it is documented.  /talk/