Sahih Adab al-Mufrad

‘Abdah bin Hazn says: The owners of camels and the owners of goats boasted to one another (the owners of camels said that they had superiority, and the owners of goats said that they had superiority). So the Prophet (ﷺ) said: “When Musa (Moses) was made a Prophet, he was a shepherd of goats; when Dawud (David) was made a Prophet, he too was a shepherd; and when I was made a Prophet, I used to graze the goats of my family in the Ajyad neighborhood.”