Musannaf Ibn Abi Shayba 18:55

Abu Bakr narrated to us, he said: Muhammad ibn Bishr narrated to us, he said: Sa’id narrated to us, from Matar, from ‘Amr ibn Shu’ayb, from his father, from his grandfather: That the Messenger of Allah (may Allah bless him and grant him peace) decreed regarding the *mudihah* (a wound that exposes the bone) five [camels], five [camels].