Maliks Muwatta Book 21, Hadith Number 15.

Section : Booty from War in General.

Yahya related to me from Malik from Nafi from Abdullah ibn Umar that the Messenger of Allah, may Allah bless him and grant him peace, sent a raiding party which included Abdullah ibn Umar near Najd. They plundered many camels and their portions were twelve or eleven camels each. They divided it up camel by camel.