Quran 4:17 — Women (Al-Nesa')

Repentance is acceptable by GOD from those who fall in sin out of ignorance, then repent immediately thereafter. GOD redeems them. GOD is Omniscient, Most Wise.

[4:16] The couple who commits adultery shall be punished.* If they repent and reform, you shall leave them alone. GOD is Redeemer, Most Merciful.

[4:18] Not acceptable is the repentance of those who commit sins until death comes to them, then say, "Now I repent." Nor is it acceptable from those who die as disbelievers. For these, we have prepared a painful retribution.