Sahih al-Bukhari Book 34, Hadith 24
The companions of Allah's Messenger (ﷺ) used to practice manual labor, so their sweat used to smell, and
they were advised to take a bath.
When Abu Bakr As-Siddiq was chosen Caliph, he said, "My people know that my profession was not incapable of providing substance to my family. And as I will be busy serving the Muslim nation, my family will eat from the National Treasury of Muslims, and I will practice the profession of serving the Muslims."
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."