Sayyiduna Ibn Umar (may Allah be pleased with them both) said: The Messenger of Allah (peace and blessings be upon him) sent an army towards Najd, and I was among them. Our shares reached twelve camels each, and the Messenger of Allah (peace and blessings be upon him) gave us one more camel each, so we came back with thirteen camels each.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12794