Does the Marriage of the Adulterer to the Adulteress Excuse Them From the Punishment?

Question :

Is the marriage of an adulterer to an adulteress with whom he had illegal sexual intercourse an atonement for their sin? And does the marriage excuse them from the imposition of the punishment?

Answer:

The marriage of the adulterer to the woman with whom he committed illegal sexual intercourse is not considered. an atonement. The atonement for adultery is only in two things: Either the punishment is imposed upon him if news of it reaches the authorities, or he must turn in repentance to Allah, the Almighty, the All-Powerful due to this act of adultery, improve his behavior and stay away from places of temptation and fornication.

As for him marrying this woman, it is forbidden for him to marry her, and it is forbidden for her to marry him, because Allah says:

"The adulterer-fornicator marries not but an adulteress-fornica- tress or a Mushrikah, and the adulteress-fornicatress, none marries her except an adulterer-fornicator or a Mushrik [and that means that the man who agrees to marry (have a sexual relation with) a Mushrikah (female polytheist, pagan or idolatress) or a prostitute, then surely, he is either an adulterer-fornicator or a Mushrik (polytheist, pagan or idolater). And the woman who agrees to marry (have a sexual relation with) a Mushrik (polytheist, pagan or idolater) or an adulterer-fornicator, then she is either a prostitute or a Mushrikah (female polytheist, pagan, or idolatress)]. Such a thing is forbidden to the believers (of Islamic Monotheism).

Unless they repent to Allah with sincere repentance and regret what has passed and improve their behavior. Then there is no objection to him marrying her, just as any other may marry her.

As for a child that may result from illegal sexual intercourse, he is not considered the son of his father, according to the generality of the words of the Messenger :
"The child is attributed to the mattress on which he was born and Al-'Ahir is to be stoned."

Al-'Ahir means the one who commits illegal sexual intercourse.
That is, he has no child, that is the meaning of the Hadith. Even if he married her after repenting, the child created from the first water (i.e. the sperm of illegal sexual intercourse) will not be his child and will not inherit from this person who committed illegal sexual intercourse, even though he claims him as his son, because he is not a legitimate son.