A man was pardoned from the hadd punishment for intentional murder on the condition that he marry his sister to the brother of the murdered man. Is this permissible?

Question : A man was pardoned from the qisas (retaliation in kind) for intentional murder, being reduced to paying the diyah (blood money), on the condition that he marry his daughter to the brother of the murdered man. Is this valid if the killer agrees?

Answer : It is not permissible; this is not permissible, because it is not permissible to make a woman’s private parts a compensation in an exchange. For this reason, marriage to a slave woman (shighat) is prohibited.