It is narrated on the authority of 'A'isha who said: When the Messenger of Allah ﷺ passed away, his wives made up their minds to send 'Uthman b. 'Affan (as their spokesman) to Abu Bakr to demand from him their share from the legacy of Prophet ﷺ. (At this), A'isha said to them: Hasn't the Messenger of Allah ﷺ said:" We (Prophets) do not have any heirs;
what we leave behind is (to be given in) charity"?

حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، قَالَ قَرَأْتُ عَلَى مَالِكٍ عَنِ ابْنِ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، أَنَّهَا قَالَتْ إِنَّ أَزْوَاجَ النَّبِيِّ ﷺ حِينَ تُوُفِّيَ رَسُولُ اللَّهِ ﷺ أَرَدْنَ أَنْ يَبْعَثْنَ عُثْمَانَ بْنَ عَفَّانَ إِلَى أَبِي بَكْرٍ فَيَسْأَلْنَهُ مِيرَاثَهُنَّ مِنَ النَّبِيِّ ﷺ قَالَتْ عَائِشَةُ لَهُنَّ أَلَيْسَ قَدْ قَالَ رَسُولُ اللَّهِ ﷺ " لاَ نُورَثُ مَا تَرَكْنَا فَهُوَ صَدَقَةٌ " .