Could you explain the practice of having slaves at the time of the Ahlulbayt (as)? Were male slaves mahram to the women of the house? And could men have relations with female slaves without marrying them?
According to Islam all humans are the servants of Allah and slavery is wrong. However the time of Prophet a lot of people were slave and slavery was acceptable in the world. Islam started to teach people that it is wrong and to free the slaves step by step . First Islam gave them rights and made rules to support them....
Anyway according to Islam the female slaves were like the wife of the owner and the male slaves were mahram.