Abdullah bin Shaqiq (may Allah have mercy on him) narrated from a man of Balqayn that he came to the Prophet (peace and blessings be upon him) while he (peace and blessings be upon him) was in Wadi al-Qura. He asked about the spoils, and he (peace and blessings be upon him) said: "One fifth of it is for Allah, and the remaining four fifths are for the army." He said: "Does anyone have priority over anyone else?" He (peace and blessings be upon him) said: "No, not even the arrow you pull out of your side; you have no greater right to it than your brother."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب السير / 18012