2:178O you who believe! Retaliation for the murdered is ordained upon you: the free for the free, the slave for the slave, the female for the female. But if he is forgiven by his kin, then grant any reasonable demand, and pay with good will. This is a concession from your Lord, and a mercy. But whoever commits aggression after that, a painful torment awaits him.

2:179There is life for you in retaliation, O people of understanding, so that you may refrain.

2:194The sacred month for the sacred month; and sacrilege calls for retaliation. Whoever commits aggression against you, retaliate against him in the same measure as he has committed against you. And be conscious of God, and know that God is with the righteous.