It belongs not to a believer to slay a believer, except it be by error. If any slays a believer by error, then let him set free a believing slave, and bloodwit is to be paid to his family unless they forgo it as a freewill offering. If he belong to a people at enmity with you and is a believer, let the slayer set free a believing slave. If he belong to a people joined with you by a compact, then bloodwit is to be paid to his family and the slayer shall set free a believing slave. But if he finds not the means, let him fast two successive months -- God's turning; God is All-knowing, All-wise. 92 And whoso slays a believer wilfully, his recompense is Gehenna, therein dwelling forever, and God will be wroth with him and will curse him, and prepare for him a mighty chastisement. 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 Not equal are those of the believers who sit (at home), except those who are disabled (by injury or are blind or lame, etc.), and those who strive hard and fight in the Cause of Allah with their wealth and their lives. Allah has preferred in grades those who strive hard and fight with their wealth and their lives above those who sit (at home). Unto each, Allah has promised good (Paradise), but Allah has preferred those who strive hard and fight, above those who sit (at home) by a huge reward; 95 [many] degrees thereof and forgiveness of sins, and His grace; for God is indeed much-forgiving, a dispenser of grace. 96