Sahih Muslim | Book 19 | Hadith Number 4330
Narrated by Ibn Umar
It has been narrated on the authority of Ibn Umar that the Prophet (may peace be upon him) sent an expedition to Najd and I was among the troops. They got a large number ofcamels as a booty. Eleven or twelve camels fell to the lot of every fighter and each of them also got one extra camel.