The Prophet ﷺ came to me while I was ill. He performed ablution and threw the remaining water on me (or said, "Pour it on him) " When I came to my senses I said, "O Messenger of Allah ﷺ! I have no son or father to be my heir, so how will be my inheritance?" Then the Verse of inheritance was revealed.  

دَخَلَ عَلَىَّ النَّبِيُّ ﷺ وَأَنَا مَرِيضٌ فَتَوَضَّأَ فَصَبَّ عَلَىَّ أَوْ قَالَ صُبُّوا عَلَيْهِ فَعَقَلْتُ فَقُلْتُ لاَ يَرِثُنِي إِلاَّ كَلاَلَةٌ فَكَيْفَ الْمِيرَاثُ فَنَزَلَتْ آيَةُ الْفَرَائِضِ