Sahih Bukhari | Volume 7 | Hadith Number 364

Narrated by Jabir bin 'Abdullah
We were with Allah's Apostle collecting Al-Kabath at Mar-Az-Zahran. The Prophet said, "Collect the black ones, for they are better." Somebody said, (O Allah's Apostle!) Have you ever shepherded sheep?" He said, "There has been no prophet but has shepherded them."