Abu Dawud Book 8, Hadith Number 2737.
Chapter : Not known.
Narated By Abdullah ibn Umar : The Apostle of Allah (PBUH) sent a detachment to Najd. I went out along with them, and got abundant riches. Our commander gave each of us a camel as a reward. We then came upon the Apostle of Allah (PBUH) and he divided the spoils of war among us. Each of us received twelve camels after taking a fifth of it. The Apostle of Allah (PBUH) did not take account of our companion (i.e. the commander of the army), nor did he blame him for what he had done. Thus each man of us had received thirteen camels with the reward he gave.