2 : 178
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ كُتِبَ عَلَيۡكُمُ ٱلۡقِصَاصُ فِي ٱلۡقَتۡلَىۖ ٱلۡحُرُّ بِٱلۡحُرِّ وَٱلۡعَبۡدُ بِٱلۡعَبۡدِ وَٱلۡأُنثَىٰ بِٱلۡأُنثَىٰۚ فَمَنۡ عُفِيَ لَهُۥ مِنۡ أَخِيهِ شَيۡءٞ فَٱتِّبَاعُۢ بِٱلۡمَعۡرُوفِ وَأَدَآءٌ إِلَيۡهِ بِإِحۡسَٰنٖۗ ذَٰلِكَ تَخۡفِيفٞ مِّن رَّبِّكُمۡ وَرَحۡمَةٞۗ فَمَنِ ٱعۡتَدَىٰ بَعۡدَ ذَٰلِكَ فَلَهُۥ عَذَابٌ أَلِيمٞ
O you who believe, legal retribution is prescribed for you in cases of murder – a free for a free, a slave for a slave, and a female for a female. But if one is pardoned by the victim’s guardian, then a fair ransom of blood money should be set and paid in the best way. This is a concession and a mercy from your Lord. But whoever transgresses the limits afterward, will have a painful punishment.