“Whoever commits adultery with a slave woman or a free woman, his child is illegitimate, and he cannot inherit from him or be inherited from (i.e., this child cannot inherit from him).”
Sunan Ibn Majah Book 23, Hadith 27
← Previous Hadith “It is disbelief for a man to attribute himself to someone other than his father knowingly, or to deny his connection to his father, even subtly.”*

Sunan Ibn Majah Book 23, Hadith 26 Next Hadith → “Every child who is attributed to his father after his father to whom he is attributed has died, and his heirs attributed him to him after he died, he ruled that* whoever was born to a slave woman whom he owned at the time when he had intercourse with her, he should be named after the one to whom he was attributed, but he has no share of any inheritance that was distributed previously. Whatever inheritance he finds has not yet been distributed, he will have a share of it. But he cannot be named after his father if the man whom he claimed as his father did not acknowledge him. If he as born to a slave woman whom his father did not own, or to a free woman with whom he committed adultery, then he cannot be named after him and he does not inherit from him, even if the one whom he claims as his father acknowledges him. So he is an illegitimate child who belongs to his mother’s people, whoever they are, whether she is a free woman or a slave.”

Sunan Ibn Majah Book 23, Hadith 28