Sahih al-Bukhari Book 34, Hadith 26
Allah's Messenger (ﷺ) said, "The Prophet (ﷺ) David used not to eat except from the earnings of his manual
labor."
The Prophet (ﷺ) said, "Nobody has ever eaten a better meal than that which one has earned by working with one's own hands. The Prophet (ﷺ) of Allah, David used to eat from the earnings of his manual labor."
Allah's Messenger (ﷺ) said, "No doubt, it is better for any one of you to cut a bundle of wood and carry it over his back rather than to ask someone who may or may not give him."