Read and reflect on verse 2062 from Surah Al-Israa: 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...
وَلَا تَقْتُلُوا النَّفْسَ الَّتِي حَرَّمَ اللَّهُ إِلَّا بِالْحَقِّ ۗ وَمَنْ قُتِلَ مَظْلُومًا فَقَدْ جَعَلْنَا لِوَلِيِّهِ سُلْطَانًا فَلَا يُسْرِفْ فِي الْقَتْلِ ۖ إِنَّهُ كَانَ مَنْصُورًا
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]!