4:16If two men among you commit it, punish them both. But if they repent and reform, leave them alone. God is Redeemer, Full of Mercy.

4:17Repentance is available from God for those who commit evil out of ignorance, and then repent soon after. These—God will relent towards them. God is Knowing and Wise.

4:18But repentance is not available for those who commit evils, until when death approaches one of them, he says, “Now I repent,” nor for those who die as disbelievers. These—We have prepared for them a painful torment.

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.