Sahih al-Bukhari 2741

ʿAmr ibn Zurara informed us; Ismaʿil informed us, from Ibn ʿAwn, from Ibrahim, from al-Aswad, who said: In ʿAʾisha’s presence, people said that ʿAli (may Allah be pleased with them both) had been appointed by bequest. She said, “When did he make a bequest to him? I had been supporting him against my chest—or she said, in my lap—and he asked for a basin. Then he slumped in my lap, and I did not even realize that he had died. So when could he have made a bequest to him?”