Musnad Ahmad 1670

It was narrated from "Urwah that "Abdur-Rahman bin "Awf said: The Messenger of Allah (ﷺ) allocated the land of such and such to me and ‘Umar bin al-Khattab. Az-Zubair went to the family of ‘Umar and bought his share from them. Then he went to ‘Uthman bin "Affan and said: "Abdur-Rahman bin ‘Awf is claiming that the Messenger of Allah (ﷺ) allocated the land of such and such to him and ʼUmar bin al-Khattab, and I have bought the share of ‘Umar"s family. "Uthman said: "Abdur-Rahman is a man whose testimony is good, whether it is for him or against him.