Dear Friends!
help me to find the exact meaning of the reddend sentence!

"These are divided between two factions. Some are descended from the old inhabitants of the land, and are Moors in name and appearance. For the rest, they rate the doctrines of Mahoma at their true value, but are none the better for that."
It is about inhabitants of a city in Iraq who are from two dictictive origins.
Thanks very much