عَنْ أَبِي هُرَيْرَةَ
أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ نَهَى أَنْ تُنْكَحَ الْمَرْأَةُ عَلَى عَمَّتِهَا أَوِ الْعَمَّةُ عَلَى بِنْتِ أَخِيهَا وَالْمَرْأَةُ عَلَى خَالَتِهَا أَوِ الْخَالَةُ عَلَى بِنْتِ أُخْتِهَا لَا تُنْكَحُ الصُّغْرَى عَلَى الْكُبْرَى وَلَا الْكُبْرَى عَلَى الصُّغْرَى
God’s Messenger forbade that a woman should be married to one who had married her paternal aunt, or a paternal aunt to one who had married her brother’s daughter, or a woman to one who had married her maternal aunt, or a maternal aunt to one who had married her sister’s daughter. A younger sister must not be married to one who has married an elder sister, nor an elder sister to one who has married a younger sister. Tirmidhi, Abu Dawud, Darimi and Nasai transmitted it, Nasai’s version ending with “her sister’s daughter.”