Mishkat al-Masabih #3205

Abu-d Darda’ said that when the Prophet passed a woman who was near the time to be delivered of a child he asked about her and was told that she was so and so’s slave woman. He asked whether he was having sexual intercourse with her, and when he was told that he was, he said, “I am inclined to invoke a curse on him which will enter his grave with him. How can he take the child into his service when that is not lawful for him, or how can he make it an heir when that is not lawful for him?”* * The reason for the curse is said to be because he did wait the prescribed period after acquiring the woman and so could not know whether the child was his or not. If he treated the child as a slave he might be enslaving his own son, and if he treated it as an heir he might be doing this to one who was not his son. Muslim transmitted it.