What is the ruling on disowning a child's lineage through li'an after the wife's adultery has been proven and she has confessed, and DNA evidence has confirmed that the child is not related to the husband, given the existence of conflicting prophetic narrations concerning lineage?

If the wife confesses to adultery, and analysis confirms that the child is not from the husband, the husband must disown the child through li'an (oath of condemnation). This is because it is akin to certainty that the child is from the adulterer. If he does not disown him, the child will be attributed to him and inherit from him, which is impermissible. Furthermore, if the husband believes his wife's confession of adultery, it is considered like a situation where he witnesses her committing adultery, and he is then obliged to accuse her and disown the child. If the husband knows of her adultery or has strong, confirmed suspicion thereof, he must accuse her and perform li'an to disown the child.