The Division of Spoils and Dishonesty regarding them - Section 3 Mishkat al-Masabih 4032
Arabic hadith text
وَعَن رافعِ بن خديجٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَجْعَلُ فِي قَسْمِ الْمَغَانِمِ عَشْرًا مِنَ الشّاءِ بِبَعِير. رَوَاهُ النَّسَائِيّ
Translation
Rafi' b. Khadij said that in the division of the booty God’s Messenger used to treat ten sheep as equivalent to a camel.Nasa’i transmitted it.