It is narrated from Kharijah bin Amr (may Allah be pleased with him), who was an ally of Abu Sufyan in the Jahiliyyah, that the Messenger of Allah (peace and blessings be upon him) said: "O people! It is not lawful for me, nor for anyone, to take from the spoils of war of the Muslims even as much as the weight of this hair" - and he (peace and blessings be upon him) took a hair from the top of his she-camel's hump - "except what Allah has prescribed for me."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14144