كتاب البيوع
Read the English translation first, with the original Arabic directly underneath.
Narrated Al-Miqdam:
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."
مَا أَكَلَ أَحَدٌ طَعَامًا قَطُّ خَيْرًا مِنْ أَنْ يَأْكُلَ مِنْ عَمَلِ يَدِهِ، وَإِنَّ نَبِيَّ اللَّهِ دَاوُدَ ـ عَلَيْهِ السَّلاَمُ ـ كَانَ يَأْكُلُ مِنْ عَمَلِ يَدِهِ