Mishkat al-Masabih
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.
وَعَن رافعِ بن خديجٍ قَالَ: كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَجْعَلُ فِي قَسْمِ الْمَغَانِمِ عَشْرًا مِنَ الشّاءِ بِبَعِير. رَوَاهُ النَّسَائِيّ
Reference