A Husband Commits Adultery With His Wife's Sister

Question: If a husband commits adultery with his wife's sister, what is the ruling regarding that in Islam? Does this make his wife forbidden for him, or does it nullify the marriage contract? And is it permissible for him later to marry the sister if they claim to love each other? Sheikh Abu Amr Al-Hajoori The ruling in Islam is that he is to be killed; he is to be stoned with rocks until he dies. This is his ruling in Islam because he married and was muhsan (a person who was in a valid marriage). Since he committed adultery while being muhsan, the legal punishment for the married adulterer is stoning until death. This is his ruling in Islam. Furthermore, if this legal punishment is not established— which is what is currently happening — then it is not permissible for her sister (the wife) to remain with him. It is not permissible for her to remain with him; yes indeed, because this man is an adulterer. And it is not permissible (as Allah says): {الزَّانِي لَا يَنكِحُ إِلَّا زَانِيَةً أَوْ مُشْرِكَةً وَالزَّانِيَةُ لَا يَنكِحُهَا إِلَّا زَانٍ أَوْ مُشْرِكٌ ۚ وَحُرِّمَ ذَٰلِكَ عَلَى الْمُؤْمِنِينَ} "The adulterer marries not but an adulteress or a Mushrikah and the adulteress none marries her except an adulterer 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, or a Mushrik (polytheist, pagan or idolater, etc.) And the woman who agrees to marry (have a sexual relation with) a Mushrik (polytheist, pagan or idolater) or an adulterer, then she is either a prostitute or a Mushrikah (female polytheist, pagan or idolatress, etc.)]. And that has been forbidden to the believers." [An-Nur (24:3)] Nor is it permissible for her guardians to cooperate with him in any of this. Source: https://t.me/sh_aboamr/29931 @Insightful_Couples