It is not for a believer to take a believer's life except by mistake; and he who kills a believer by mistake should free a slave who is a believer, and pay blood-money to the victim's family unless they forego it as an act of charity. If he belonged to a community hostile to you but was himself a believer, then a slave who is a believer should be freed. In case he belonged to a people with whom you have a treaty, then give blood-money to his family and free a believing slave. But he who has no means (to do so) should fast for a period of two months continuously to have his sins forgiven by God, and God is all-knowing and all-wise. 92 But whoever deliberately slays another believer, his requital shall be hell, therein to abide; and God will condemn him, and will reject him, and will prepare for him awesome suffering. 93 [Hence,] O you who have attained to faith, when you go forth [to war] in God's cause, use your discernment, and do not - out of a desire for the fleeting gains of this worldly life - say unto anyone who offers you the greeting of peace, "Thou art not a believer" for with God there are gains abundant. You, too, were once in the same condition - but God has been gracious unto you. Use, therefore, your discernment: verily, God is always aware of what you do. 94 Believers who stay behind, having no injury, are not equal to those who fight in the way of Allah with their wealth and their souls. Allah has preferred those who fight with their wealth and their souls a degree above those who stay behind (because of sickness). Yet to each, Allah has promised the most excellent (Paradise). And Allah has preferred those who fought over those who stayed behind with a great wage. 95 God will grant those who strive high ranks, forgiveness, and mercy. He is All-forgiving and All-merciful. 96