Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah)
Dawud :: Book 19 : Hadith 3013
Narrated Ibn Shihab:
The Apostle of Allah (peace_be_upon_him) took out his fifth from the booty of Khaybar, and divided the rest of it among those who attended the battle and among those who were away from it but attend the expedition of al-Hudaybiyyah.