Musannaf Ibn Abi Shayba 18:333

Abu Bakr narrated to us, he said: Yazid ibn Harun narrated to us, from Sa'id ibn Abi 'Aruba, from Qatadah, from 'Abdullah ibn Buraydah, from Yahya ibn Ya'mar, from Ibn 'Abbas, from 'Umar ibn al-Khattab, who said regarding the black tooth: If it is extracted and it was firm, [the compensation is] one-third of its blood money.