(the wife of the Prophet) that while Messenger of Allah ﷺ was with her, she heard a voice of a man asking permission to enter the house of Hafsa. ʿAisha added: I said, "O Messenger of Allah ﷺ! This man is asking permission to enter your house." The Prophet ﷺ said, "I think he is so-and-so," naming the foster-uncle of Hafsa. ʿAisha said, "If so-and-so," naming her foster uncle, "were living, could he enter upon me?" The Prophet ﷺ said, "Yes, for foster suckling relations make all those things unlawful which are unlawful through corresponding birth (blood) relations."  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ عِنْدَهَا وَأَنَّهَا سَمِعَتْ صَوْتَ رَجُلٍ يَسْتَأْذِنُ فِي بَيْتِ حَفْصَةَ قَالَتْ فَقُلْتُ يَا رَسُولَ اللَّهِ هَذَا رَجُلٌ يَسْتَأْذِنُ فِي بَيْتِكَ فَقَالَ النَّبِيُّ ﷺ أُرَاهُ فُلاَنًا لِعَمِّ حَفْصَةَ مِنَ الرَّضَاعَةِ قَالَتْ عَائِشَةُ لَوْ كَانَ فُلاَنٌ حَيًّا لِعَمِّهَا مِنَ الرَّضَاعَةِ دَخَلَ عَلَىَّ فَقَالَ نَعَمِ الرَّضَاعَةُ تُحَرِّمُ مَا تُحَرِّمُ الْوِلاَدَةُ  

Messenger of Allah, he is the person who seeks permission to enter your house, whereupon Messenger of Allah ﷺ said: I think he is so and so (uncle of Hafsa by reason of fosterage). 'A'isha said: Messenger of Allah, if so and so (her uncle by reason of fosterage) were alive, could he enter my house? Messenger of Allah ﷺ said: Yes. Fosterage makes unlawful what consanguinity makes unlawful.  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ عِنْدَهَا وَإِنَّهَا سَمِعَتْ صَوْتَ رَجُلٍ يَسْتَأْذِنُ فِي بَيْتِ حَفْصَةَ قَالَتْ عَائِشَةُ فَقُلْتُ يَا رَسُولَ اللَّهِ هَذَا رَجُلٌ يَسْتَأْذِنُ فِي بَيْتِكَ فَقَالَ رَسُولُ اللَّهِ ﷺ أُرَاهُ فُلاَنًا لِعَمِّ حَفْصَةَ مِنَ الرَّضَاعَةِ فَقَالَتْ عَائِشَةُ يَا رَسُولَ اللَّهِ لَوْ كَانَ فُلاَنٌ حَيًّا لِعَمِّهَا مِنَ الرَّضَاعَةِ دَخَلَ عَلَىَّ قَالَ رَسُولُ اللَّهِ ﷺ نَعَمْ إِنَّ الرَّضَاعَةَ تُحَرِّمُ مَا تُحَرِّمُ الْوِلاَدَةُ