It is not for a believer to kill a believer except (that it be) by mistake, and whosoever kills a believer by mistake, (it is ordained that) he must set free a believing slave and a compensation (blood money, i.e. Diya) be given to the deceased's family, unless they remit it. If the deceased belonged to a people at war with you and he was a believer; the freeing of a believing slave (is prescribed), and if he belonged to a people with whom you have a treaty of mutual alliance, compensation (blood money - Diya) must be paid to his family, and a believing slave must be freed. And whoso finds this (the penance of freeing a slave) beyond his means, he must fast for two consecutive months in order to seek repentance from Allah. And Allah is Ever All-Knowing, All-Wise.
هيچ مؤمنى را نرسد كه مؤمن ديگر را جز به خطا بكشد. و هر كس كه مؤمنى را به خطا بكشد بايد كه بنده‌اى مؤمن را آزاد كند و خونبهايش را به خانواده‌اش تسليم كند، مگر آنكه خونبها را ببخشند. و اگر مقتول، مؤمن و از قومى است كه دشمن شماست فقط بنده مؤمنى را آزاد كند و اگر از قومى است كه با شما پيمان بسته‌اند، خونبها به خانواده‌اش پرداخت شود و بنده مؤمنى را آزاد كند و هر كس كه بنده‌اى نيابد براى توبه دو ماه پى‌درپى روزه بگيرد. و خدا دانا و حكيم است.