Musannaf Ibn Abi Shayba 18:266

Abu Bakr narrated to us, he said: Muhammad ibn Bishr and Abu Usamah narrated to us, from Sa’id, from Ghalib al-Tammar, from Humayd ibn Hilal, from Masruq ibn Aws, from Abu Musa, that the Messenger of Allah (may Allah bless him and grant him peace) decreed for the fingers [the compensation of] ten camels.