Sahih Muslim Book - 17, Hadith - 3580

وَحَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِىُّ حَدَّثَنَا أَبِى حَدَّثَنَا شُعْبَةُ عَنِ الْحَكَمِ عَنْ عِرَاكِ بْنِ مَالِكٍ عَنْ عُرْوَةَ عَنْ عَائِشَةَ قَالَتِ اسْتَأْذَنَ عَلَىَّ أَفْلَحُ بْنُ قُعَيْسٍ فَأَبَيْتُ أَنْ آذَنَ لَهُ فَأَرْسَلَ إِنِّى عَمُّكِ أَرْضَعَتْكِ امْرَأَةُ أَخِى. فَأَبَيْتُ أَنْ آذَنَ لَهُ فَجَاءَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- فَذَكَرْتُ ذَلِكَ لَهُ فَقَالَ « لِيَدْخُلْ عَلَيْكِ فَإِنَّهُ عَمُّكِ ».

It was narrated that 'Aishah said: "Aflah. bin Qu'ais asked for permission to enter upon me, and I refused to let him in. He sent word saying: 'I am your paternal uncle, my brother's wife breastfed you.' But she refused to let him in. Then the Messenger of Allah (s.a.w) came, and she told him about that, and he said: 'Let him enter upon you, for he is your paternal uncle."'