وَمَا كَانَ لِمُؤْمِنٍ أَن يَقْتُلَ مُؤْمِنًا إِلَّا خَطَـًٔا ۚ وَمَن قَتَلَ مُؤْمِنًا خَطَـًٔا فَتَحْرِيرُ رَقَبَةٍ مُّؤْمِنَةٍ وَدِيَةٌ مُّسَلَّمَةٌ إِلَىٰٓ أَهْلِهِۦٓ إِلَّآ أَن يَصَّدَّقُوا۟ ۚ فَإِن كَانَ مِن قَوْمٍ عَدُوٍّ لَّكُمْ وَهُوَ مُؤْمِنٌ فَتَحْرِيرُ رَقَبَةٍ مُّؤْمِنَةٍ ۖ وَإِن كَانَ مِن قَوْمٍۭ بَيْنَكُمْ وَبَيْنَهُم مِّيثَـٰقٌ فَدِيَةٌ مُّسَلَّمَةٌ إِلَىٰٓ أَهْلِهِۦ وَتَحْرِيرُ رَقَبَةٍ مُّؤْمِنَةٍ ۖ فَمَن لَّمْ يَجِدْ فَصِيَامُ شَهْرَيْنِ مُتَتَابِعَيْنِ تَوْبَةً مِّنَ ٱللَّهِ ۗ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًا
Wa maa kaana limu'minin ai yaqtula mu'minan illaa khata'aa; waman qatala mu'minan khata'an fatabreeru raqabatim mu'minatinw wa diyatum mmusallamatun ilaaa ahliheee illaaa ai yassaddaqoo; fa in kaana min qawmin 'aduwwil lakum wa huwa mu'minun fatabreeru raqabatim mu'minah; wa in kaana min qawmim bainakum wa bainahum meesaaqun fadiyatum mmusallamatun ilaaa ahlihee wa tahreeru raqabatim mu'minatin famal lam yajid fa Siyaamu shahraini mutataabi'aini tawhatam minal laah; wa kaanal laahu 'Aleeman hakeemaa
It is not for a believer to kill a believer, except by mistake. Whoever kills a believer by mistake must free a believing slave and pay blood-money to the victim's family, unless they remit it as charity. If the victim was from a people hostile to you and was a believer, then the freeing of a believing slave. And if the victim was from a people with whom you have a covenant, then blood-money paid to his family and the freeing of a believing slave. Whoever does not find the means must fast two consecutive months — as a repentance from God. And God is all-knowing, all-wise.