Al-Quran: And there is (a saving of) life for you in Al-Qisas (the Law of Equality in punishment), O men of understanding, that you may restrain yourselves.

                                         Bismillahirrahmanirrahim

Al Quran : O you who believe! Al-Qisas (the Law of Equality in punishment) is prescribed for you in case of murder: the free for the free, the slave for the slave, and the female for the female. But if the killer is forgiven by the brother (or the relatives, etc.) of the killed against blood-money, then adhering to it with fairness and payment of the blood-money to the heir should be made in fairness. This is an alleviation and a mercy from your Lord. So after this whoever transgresses the limits (i.e. kills the killer after taking the blood-money), he shall have a painful torment.

And there is (a saving of) life for you in Al-Qisas (the Law of Equality in punishment), O men of understanding, that you may restrain yourselves.

Al Quran, Surah Al-Baqara (2), Verse #178-179