Sunnan Abu Dawud Collection: ::Book Number 19:: Hadith # 3009
Narrated Mujammi' ibn Jariyah al-Ansari,: Khaybar was divided among the people of al-Hudaybiyyah. The Apostle of Allah (peace_be_upon_him) divided it into eighteen portions. The army contained one thousand and five hundred people. There were three hundred horsemen among them. He gave double share to the horsemen, and a single to the footmen.