(44) باب صَبِّ النَّبِيِّ صلى الله عليه وسلم وَضُوءَهُ عَلَى الْمُغْمَى عَلَيْهِ
Narrated Jabir:
Allah's Messenger (ﷺ) came to visit me while I was sick and unconscious. He performed ablution and sprinkled the remaining water on me and I became conscious and said, "O Allah's Messenger (ﷺ)! To whom will my inheritance go as I have neither ascendants nor descendants?" Then the Divine verses regarding Fara'id (inheritance) were revealed.
Reference: Sahih al-Bukhari 194
In-book reference: Book 4, Hadith 60
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 4, Hadith 193