(26) The Book of Marriage
كتاب النكاح
(52) Chapter: The Breast Milk Belongs To The Husband
(52) باب لَبَنِ الْفَحْلِ ‏.‏
Sunan an-Nasa'i 3314 
It was narrated from 'Urwah that 'Aishah told him:
"My paternal uncle through breast-feeding, Abu Al-Ja'd, came to me, and I sent him away. -He (one of the narrators) said: "Hisham said: 'He was Abu Al-Qu'ais." - "Then the Messenger of Allah came, and I told him. The Messenger of Allah said: 'Give him permission (to enter).'"
أَخْبَرَنِي إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا عَبْدُ الرَّزَّاقِ، قَالَ أَنْبَأَنَا ابْنُ جُرَيْجٍ، قَالَ أَخْبَرَنِي عَطَاءٌ، عَنْ عُرْوَةَ، أَنَّ عَائِشَةَ، قَالَتْ جَاءَ عَمِّي أَبُو الْجَعْدِ مِنَ الرَّضَاعَةِ فَرَدَدْتُهُ - قَالَ وَقَالَ هِشَامٌ هُوَ أَبُو الْقُعَيْسِ - فَجَاءَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَأَخْبَرْتُهُ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ ائْذَنِي لَهُ ‏"‏ ‏.‏
Grade :  Sahih (Darussalam)
Reference : Sunan an-Nasa'i 3314
In-book reference : Book 26, Hadith 119
English translation : Vol. 4, Book 26, Hadith 3316