Ibn Abbas (may Allah be pleased with them both) said regarding the saying of Allah, "a life for a life" [Surah al-Ma'idah: 45]: A life will be taken for a life, an eye will be put out for an eye, a nose will be cut off for a nose, a tooth will be pulled out for a tooth, and retaliation will be taken for a wound with a wound. In these matters Muslims who are free, men and women, are all equal, when these acts are done deliberately.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجنايات / 16094