Amr bin Shu'ayb narrates from his father, and he from his grandfather (may Allah be pleased with them both), that the Prophet (peace and blessings be upon him) said: "For a bone-exposing wound (mudihah) there are five camels, and the fingers are all equal: for them there are 10 camels."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16195