وَمَا كَانَ لِمُؤۡمِنٍ أَن يَقۡتُلَ مُؤۡمِنًا إِلَّا خَطَـٔٗاۚ وَمَن قَتَلَ مُؤۡمِنًا خَطَـٔٗا فَتَحۡرِيرُ رَقَبَةٖ مُّؤۡمِنَةٖ وَدِيَةٞ مُّسَلَّمَةٌ إِلَىٰٓ أَهۡلِهِۦٓ إِلَّآ أَن يَصَّدَّقُواْۚ فَإِن كَانَ مِن قَوۡمٍ عَدُوّٖ لَّكُمۡ وَهُوَ مُؤۡمِنٞ فَتَحۡرِيرُ رَقَبَةٖ مُّؤۡمِنَةٖۖ وَإِن كَانَ مِن قَوۡمِۭ بَيۡنَكُمۡ وَبَيۡنَهُم مِّيثَٰقٞ فَدِيَةٞ مُّسَلَّمَةٌ إِلَىٰٓ أَهۡلِهِۦ وَتَحۡرِيرُ رَقَبَةٖ مُّؤۡمِنَةٖۖ فَمَن لَّمۡ يَجِدۡ فَصِيَامُ شَهۡرَيۡنِ مُتَتَابِعَيۡنِ تَوۡبَةٗ مِّنَ ٱللَّهِۗ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمٗا
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
English Translation
And never is it for a believer to kill a believer except by mistake. And whoever kills a believer by mistake - then the freeing of a believing slave and a compensation payment presented to the deceased's family [is required] unless they give [up their right as] charity. But if the deceased was from a people at war with you and he was a believer - then [only] the freeing of a believing slave; and if he was from a people with whom you have a treaty - then a compensation payment presented to his family and the freeing of a believing slave. And whoever does not find [one or cannot afford to buy one] - then [instead], a fast for two months consecutively, [seeking] acceptance of repentance from Allah. And Allah is ever Knowing and Wise
— Saheeh International