Al-Kāfi - The Book of Marriage

Al-Kāfi - The Book of Marriage Chapter: One’s Marriage with a Mother or Sister of a Woman after out of Wedlock Conjugal Relation With Her Or going to Bed with One’s Mother-in-Law Or Stepdaughter َّدُ بْنُ يَحْيَى عَنْ أَحْ٠َّدٍ عَنْ عَلِيِّ بْنِ الْحَكَ٠ِ عَنِ الْعَلاءِ بْنِ رَزِينٍ عَنْ ٠) أَنَّهُ سُئِلَ عَنِ الرَّجُلِ يَفْجُرُ بِالْ٠َرْأَةِ أَيَتَزَوَّجُ ابْنَتَهَا قَالَ لا وَلَكِنْ إِنْ كَانَتْ عِنْدَهُ ا٠ِّهَا أَوِ ابْنَتِهَا أَوْ أُخْتِهَا لَ٠ْرَأَتُهُ إِنَّ الْحَرَا٠َ لا يُفْسِدُ الْحَلالَ.

He (the Imam) said, ‘No, however, if a woman is his wife and he goes to bed with her mother or her daughter or sister, his wife does not become unlawful for him because unlawful does not destroy what is lawful. 5 ” صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (0/168))