﴿ وَلَا تَقْتُلُوا۟ ٱلنَّفْسَ ٱلَّتِى حَرَّمَ ٱللَّهُ إِلَّا بِٱلْحَقِّ ۗ وَمَن قُتِلَ مَظْلُومًۭا فَقَدْ جَعَلْنَا لِوَلِيِّهِۦ سُلْطَٰنًۭا فَلَا يُسْرِف فِّى ٱلْقَتْلِ ۖ إِنَّهُۥ كَانَ مَنصُورًۭا ﴾

“And do not take any human being's life -[the life] which God has willed to be, sacred-otherwise than in [the pursuit of] justice. Hence, if anyone has been slain wrongfully, We have empowered the defender of his rights [to exact a just retribution]; but even so, let him not exceed the bounds of equity in [retributive] killing. [And as for him who has been slain wrongfully -] behold, he is indeed succoured [by God]!”

(And slay not the life) of a believing person (which Allah hath forbidden) to slay (save with right) through stoning, application of the law of retaliation or because of apostasy. (Whoso is slain wrongfully) and intentionally, (We have given power) a cause and pretext against the killer, if he wishes he can kill him and if he wishes he can spare him, and if he wishes he can take blood money instead (unto his heir) the heir of the victim, (but let him not commit excess in slaying) if he kills the killer of the victim. Thus, he should not kill other than the killer himself; it is also said that this means, according to another reading: do not kill ten people to avenge the killing of one person. (Lo! he will be helped) for in that case, he will be killed and cannot be spared.