Abu Dawud Book 34, Hadith Number 4578.

Chapter : Retaliation for a tooth.

Narated By Anas b. Malik : Al-Rubayyi’, sister of Anas b. al-Nadr, broke (one of) the front teeth of a woman. They came to the Prophet (may peace be upon him). He made a decision in accordance with the Book of Allah that retaliation should be taken. Anas b. al-Nadr said: I swear by Him Who has sent you with truth, her front tooth will not be broken today. He replied: Anas! Allah’s decree is retaliation. flut the people were agreeable to accepting a fine, so the Prophet of Allah (may peace be upon him) said : Among Allah’s servants there are those who, if they adjured Allah, He (Allah) would consent to it.

Abu Dawud said: I heard Ahmad b. Hanbal say: He was asked: How retaliation of a tooth is taken? He said: It is broken with a file.