And it is not (lawful) for a Muslim to kill a Muslim but by mistake (i.e. unintentionally). And anyone who kills a Muslim unintentionally shall (be liable to) free a Muslim slave/slave girl and (pay) blood money, to be (necessarily) handed over to the heirs of the person slain, unless they remit it. In case, he (the slain) comes from the people who are your enemies and is a believer (as well), then (only) freeing a slave/slave girl is prescribed. But if he (the slain) belongs to a people between you and whom is a (peace) treaty, then blood compensation must be delivered to his family, and freeing a Muslim slave/ slave girl is also mandatory. Then he who does not find (a slave or slave girl) is (bound) to fast for two consecutive months. (This is his) repentance (prescribed) by Allah. And Allah is All-Knowing, Most Wise.