From Sahih Bukhari (Hadith 2262):
Narrated Abu Huraira:The Prophet (ﷺ) said, "Allah did not send any prophet but shepherded sheep." His companions asked him, "Did you do the same?" The Prophet (ﷺ) replied, "Yes, I used to shepherd the sheep of the people of Mecca for some Qirats
Reference: Bukhari 2262