Yes, and he supported owning them also. That is what makes me laugh so much at all the blacks who turned muslim.
One interesting, and little known fact is that the holy land of Islam, Saudi Arabia, did not outlaw slavery of men until 1964. I don't think salvery of women is still allowed either, but, as a good moslem friend of mine said, when I asked him how many children he had, he said 3. 3 boys and 2 girls. Owing to the problem with language, I asked him again, in arabic, to which he again replied, 3, 3 boys and 2 girls.
There are many fine Moslems who are my friends, but some do have some different customs than we do.