Musannaf Ibn Abi Shayba 18:250

Abu Bakr narrated to us, he said: Waki’ narrated to us, he said: Muhammad ibn Jurayj narrated to us, he said: Sulayman ibn Musa informed me that in the letter of Umar ibn Abd al-Aziz to the commanders of the armies: And regarding teeth [i.e., injuries to teeth], there are five camels [as blood money].