Musannaf Ibn Abi Shayba 20:19

Abu Bakr narrated to us, he said: Abu Usama and Muhammad ibn Bishr narrated to us, from Sa'id ibn Abi 'Aruba, from Ghalib al-Tammar, from Humayd ibn Hilal, from Masruq ibn Aws, from Abu Musa al-Ash'ari: That the Messenger of Allah (peace and blessings of Allah be upon him) decreed for the fingers ten camels [each].