Except those who repent and amend and make manifest (the truth), these it is to whom I turn (mercifully); and I am the Oft-returning (to mercy), the Merciful. (al-baqarah: 160)

Except those who repent after that and amend, then surely Allah is Forgiving, Merciful. (al-imran: 86)

And as for the two who are guilty of indecency from among you, give them both a punishment; then if they repent and amend, turn aside from them; surely Allah is Oft-returning (to mercy), the Merciful. (An-Nisa’: 16)

Except those who repent before you have them in your power; so know that Allah is Forgiving, Merciful. (al-maidah: 34)

And (as to) those who do evil deeds, then repent after that and believe, your Lord after that is most surely Forgiving, Merciful. (al-a’raf: 153)