178th Ayah from Surah Al Baqarah
Sahih International
O you who have believed, prescribed for you is legal retribution for those murdered - the free for the free, the slave for the slave, and the female for the female. But whoever overlooks from his brother anything, then there should be a suitable follow-up and payment to him with good conduct. This is an alleviation from your Lord and a mercy. But whoever transgresses after that will have a painful punishment.
Abdul Haleem
You who believe, fair retribution is prescribed for you in cases of murder: the free man for the free man, the slave for the slave, the female for the female. But if the culprit is pardoned by his aggrieved brother, this shall be adhered to fairly, and the culprit shall pay what is due in a good way. This is an alleviation from your Lord and an act of mercy. If anyone then exceeds these limits, grievous suffering awaits him.
Mohsin Khan/Hilali
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.
Taqi Usmani
O you who believe, QiSāS has been prescribed for you in the case of murdered people: The freeman (will be killed) for the freeman, the slave for the slave, and the female for the female. However, if one is somewhat forgiven by his brother, the recourse (of the latter) is to pursue the former (for blood money) with fairness, and the obligation (of the former) is to pay (it) to the latter in a nice way. That is a relief from your Lord, and a mercy. So, whoever transgresses after all that will have a painful punishment.