It is narrated from Sayyiduna Jabir (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) was distributing the spoils of the Battle of Hunayn when a man stood up and said, "Act justly." The Prophet (peace and blessings be upon him) said: "If I do not act justly, then that would be a great misfortune."
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 14561