Musannaf Ibn Abi Shayba 28:371

Muhammad ibn Abd Allah al-Asadi narrated to us, he said: Hibban narrated to us, from Mujahid, from al-Sha’bi, that: Umar was brought seven million [dirhams] from Jalula, so he decided to distribute the stipends. He consulted Abd al-Rahman ibn Awf regarding that. Abd al-Rahman ibn Awf said: "Begin with yourself, for you are more entitled to that." He said: "No, rather I will begin with those closest to the Messenger of Allah (may Allah bless him and grant him peace) from among those who witnessed Badr, until it reaches me." He said: So he began and assigned five thousand to Ali, then to the Banu Hashim who witnessed Badr, then to their freed slaves, then to their allies, then the closest and then the next closest, until it reached him.