5. Ahmad narrated from his father, from Ali ibn al-Nu’man, from his brother, from Dawud ibn al-Nu’man, from Abi Ayyub al-Khazzaz that Abu Abdillah al-Sadiq (as) said
"I have experienced [having] both light-skinned and dark-skinned maidservants, and there was a difference between them." (Allama al-Majlisi says: It means both of them have a preference)