The Messenger of Allah ﷺ said, "Dawud would eat only from the work of his own hands."
عن رسول الله ﷺ: إن داود عليه السلام كان لا يأكل إلا من عمل يده.
Bukhari narrated it in the Book of Sales (2073), from Yahya bin Musa, who said, Abdul-Razzaq narrated to us, Mamar informed us, from Hammam bin Munabbih, who said, Abu Hurairah narrated to us, and he mentioned it.