عَنْ عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ رَضِيَ اللَّهُ عَنْهَا أَنَّ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا أَخْبَرَتْهَا أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ كَانَ عِنْدَهَا وَأَنَّهَا سَمِعَتْ صَوْتَ رَجُلٍ يَسْتَأْذِنُ فِي بَيْتِ حَفْصَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ عَائِشَةُ فَقُلْتُ يَا رَسُولَ اللَّهِ هَذَا رَجُلٌ يَسْتَأْذِنُ فِي بَيْتِكَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ أَرَاهُ فُلَانًا لِعَمٍّ لِحَفْصَةَ مِنَ الرَّضَاعَةِ فَقَالَتْ عَائِشَةُ يَا رَسُولَ اللَّهِ لَوْ كَانَ فُلَانٌ حَيًّا لِعَمِّهَا مِنَ الرَّضَاعَةِ دَخَلَ عَلَيَّ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ نَعَمْ إِنَّ الرَّضَاعَةَ تُحَرِّمُ مَا تُحَرِّمُ الْوِلَادَةُ
It is narrated from Sayyida Aisha (may Allah be pleased with her), she says: The Noble Prophet (peace and blessings be upon him) was sitting with me when I heard the voice of a man who was seeking permission to enter the house of Sayyida Hafsa (may Allah be pleased with her). I said: O Messenger of Allah! This man is seeking permission to enter your house? The Messenger of Allah (peace and blessings be upon him) said: I think he is such-and-such foster uncle of Hafsa. I said: O Messenger of Allah! If my such-and-such foster uncle were alive, could he enter upon me? The Messenger of Allah (peace and blessings be upon him) said: Yes, absolutely, indeed fosterage makes unlawful those relationships which are made unlawful by lineage and birth.