Muhammad had black slaves.
“Muhammad had many male and female slaves.He used to buy and sell them, but he purchased (more slaves) than he sold, especially after God empowered him by His message, as well as after his immigration from Mecca. He (once) sold one black slave for two. His name was Jacob al-Mudbir.” (Ibn Qayyim al-Jawaziyya, “Zad al-Ma’ad” part 1, p. 160)
