Musannaf Ibn Abi Shayba 34:280

Aswad narrated to us, Hammad bin Salamah narrated to us, from Ali bin Zaid, from Abu Hurra al-Raqashi, from his uncle, who said: I was holding the halter of the she-camel of the Messenger of Allah (may Allah bless him and grant him peace) during the middle days of Tashriq, keeping the people away from it. He said: "O people, behold, every wealth and every claim of nobility that existed in the Jahiliyyah is under these two feet of mine until the Day of Resurrection. And the first blood that is abolished is the blood of Rabi'ah bin al-Harith bin 'Abd al-Muttalib. And Allah has decreed that the first usury that is abolished is the usury of al-'Abbas bin 'Abd al-Muttalib. You shall have your capital; you will not wrong, and you will not be wronged."