Sahih Bukhari, Chapter: Jihaad (Fighting for the cause of Allah)

I went to Allah's Apostle (SAW) while he was at Khaibar after it had fallen in the Muslims' hands. I said, "O Allah's Apostle (SAW)! Give me a share (from the land of Khaibar)." One of the sons of Said bin Al-As said, "O Allah's Apostle (SAW)! Do not give him a share." I said, "This is the murderer of Ibn Qauqal." The son of Said bin Al-As said, "Strange! A Wabr (i.e. guinea pig) who has come down to us from the mountain of Qadum (i.e. grazing place of sheep) blames me for killing a Muslim who was given superiority by Allah because of me, and Allah did not disgrace me at his hands (i.e. was not killed as an infidel)." (The sub-narrator said "I do not know whether the Prophet (SAW) gave him a share or not.")