Why is the waiting period for the womb of a slave woman only one menstrual cycle?

Question:
He says: Honorable Shaykh, may Allah grant you success, why is the waiting period for a slave woman, or the purification of her womb, only one menstrual cycle or one month, whereas the waiting period for a divorced free woman is three months or three menstrual cycles? Because the evidence has come down, and the evidence has come down with this.

Answer:
A relative woman is not to be sent away if she is pregnant until she gives birth, and if she is not pregnant, she is to purify herself with one menstrual cycle. The answer is in the hadith. Yes.