4:92Never should a believer kill another believer, unless by error. Anyone who kills a believer by error must set free a believing slave, and pay compensation to the victim’s family, unless they remit it as charity. If the victim belonged to a people who are hostile to you, but is a believer, then the compensation is to free a believing slave. If he belonged to a people with whom you have a treaty, then compensation should be handed over to his family, and a believing slave set free. Anyone who lacks the means must fast for two consecutive months, by way of repentance to God. God is All-Knowing, Most Wise.

4:146Except those who repent, and reform, and hold fast to God, and dedicate their religion to God alone. These are with the believers; and God will give the believers a great reward.

4:175As for those who believe in God, and hold fast to Him, He will admit them into mercy and grace from Him, and will guide them to Himself in a straight path.