Sunan Abi Dawud

Nafi’ reported on the authority of ‘Abd Allaah bin ‘Umar “The Apostle of Allaah(ﷺ) sent a detachment towards Najd. ‘Abd Allaah bin ‘Umar also accompanied it. They gained a large number of Camels as a booty. Their portion was twelve Camels each and they were rewarded (in addition) one Camel each. The version of Ibn Mawhab added “The Apostle of Allaah(ﷺ) did not change it”