Sahih Muslim Book - 17, Hadith - 3573

وَحَدَّثَنِى حَرْمَلَةُ بْنُ يَحْيَى حَدَّثَنَا ابْنُ وَهْبٍ أَخْبَرَنِى يُونُسُ عَنِ ابْنِ شِهَابٍ عَنْ عُرْوَةَ أَنَّ عَائِشَةَ أَخْبَرَتْهُ أَنَّهُ جَاءَ أَفْلَحُ أَخُو أَبِى الْقُعَيْسِ يَسْتَأْذِنُ عَلَيْهَا بَعْدَ مَا نَزَلَ الْحِجَابُ - وَكَانَ أَبُو الْقُعَيْسِ أَبَا عَائِشَةَ مِنَ الرَّضَاعَةِ - قَالَتْ عَائِشَةُ فَقُلْتُ وَاللَّهِ لاَ آذَنُ لأَفْلَحَ حَتَّى أَسْتَأْذِنَ رَسُولَ اللَّهِ -صلى الله عليه وسلم- فَإِنَّ أَبَا الْقُعَيْسِ لَيْسَ هُوَ أَرْضَعَنِى وَلَكِنْ أَرْضَعَتْنِى امْرَأَتُهُ - قَالَتْ عَائِشَةُ - فَلَمَّا دَخَلَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- قُلْتُ يَا رَسُولَ اللَّهِ إِنَّ أَفْلَحَ أَخَا أَبِى الْقُعَيْسِ جَاءَنِى يَسْتَأْذِنُ عَلَىَّ فَكَرِهْتُ أَنْ آذَنَ لَهُ حَتَّى أَسْتَأْذِنَكَ - قَالَتْ - فَقَالَ النَّبِىُّ -صلى الله عليه وسلم- « ائْذَنِى لَهُ ». قَالَ عُرْوَةُ فَبِذَلِكَ كَانَتْ عَائِشَةُ تَقُولُ حَرِّمُوا مِنَ الرَّضَاعَةِ مَا تُحَرِّمُونَ مِنَ النَّسَبِ.

It was narrated from 'Urwah that 'Aishah told him that Aflah, the brother of Abu Al-Qu'ais, came and asked for permission to enter upon her, after the (command of) Hijab had been revealed. Abu Al-Qu'ais was 'Aishah's father through breastfeeding. 'Aishah said: "I said: 'By Allah, I will not give permission to Aflah. until I seek permission from the Messenger of Allah (s.a.w), for Abu Al-Qu'ais is not the one who breastfed me, rather his wife breastfed me.'" 'Aishah said: "When the Messenger of Allah (s.a.w) came in, I said: 'O Messenger of Allah, Aflah, the brother of Abu Al-Qu'ais, came to me and asked permission to enter upon me, but I did not want to give him permission until I asked your permission.' The Prophet (s.a.w) said: 'Give him permission."' 'Urwah said: "Because of that, 'Aishah used to say: 'Regard as unlawful through breastfeeding that which you regard as unlawful through lineage."'