عَنْ هِشَامٍ عَنْ أَبِيهِ أَنَّ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ لِلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَا رَسُولَ اللَّهِ كُلُّ نِسَائِكَ لَهَا كُنْيَةٌ غَيْرِي فَقَالَ لَهَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ ”اكْتَنِي أَنْتِ أُمَّ عَبْدِ اللَّهِ“ فَكَانَ يُقَالُ لَهَا أُمُّ عَبْدِ اللَّهِ حَتَّى مَاتَتْ وَلَمْ تَلِدْ قَطُّ
It is narrated from Sayyida Aisha (may Allah be pleased with her) that she said to the Noble Prophet (peace and blessings be upon him): O Messenger of Allah! All your other wives have a kunyah (honorific title). The Messenger of Allah (peace and blessings be upon him) said to her: You may take the kunyah "Umm Abdullah." Thus, she continued to be called Umm Abdullah, even though she passed away without having given birth to any child.