Musannaf Ibn Abi Shayba 18:56

Abu Bakr narrated to us, he said: Abd al-Rahim ibn Sulayman narrated to us, from Muhammad ibn Ishaq, from Makhul, that the Messenger of Allah (peace and blessings of Allah be upon him) gave a judgment regarding the *mudihah* (a wound that exposes the bone) and what is above it, and he set for the *mudihah* five camels.