Quran 4:16 — Women (Al-Nesa')

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

[4:15] Those who commit adultery among your women, you must have four witnesses against them, from among you. If they do bear witness, then you shall keep such women in their homes until they die, or until GOD creates an exit for them.*

[4:17] 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.