Sahih Muslim Book 25, Hadith 27
This hadith has been narrated on the authority of A'mash with the same chain of transmitters.
Allah's Messenger (ﷺ) left neither dinar nor dirham (wealth in the form of cash), nor goats (and sheep), nor camels. And he made no will about anything (in regard to his material possessions, as he had none),
It was mentioned before A'isha that will had been made (by the Holy Prophet) in favour of 'Ali (as the Prophet's first caliph), whereupon she said: When did he make will in his favour? I had been providing support to him (to the Holy Prophet) with my chest (or with my lap). He asked for a tray, when he fell in my lap (relaxing his body), and I did not realise that he had breathed his last. When did he make any will in his ('Ali's) favour?