It is narrated from Ibn Umar (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) sent an army towards Najd, in which Abdullah bin Umar (may Allah be pleased with them both) was also present. They received a great number of camels as spoils of war. Each warrior's share was 12 or 11 camels, then one camel each was given to them as a reward.
Hadith Referenceمسند الإمام الشافعي / كتاب الجهاد وقسم الغنائم / 1759
Hadith Takhrijاخرجه البخاري، فرض الخمس، باب ومن الدليل على ان الخمس .... الخ (3134) ومسلم، الجهاد، باب الأنفال (1749)۔