And We did not send any messenger but that he should be obeyed by Allah's permission; and had they, when they were unjust to themselves, come to you and asked forgiveness of Allah and the Messenger had (also) asked forgiveness for them, they would have found Allah Oft-returning (to mercy), Merciful.

But whoever repents after his iniquity and reforms (himself), then surely Allah will turn to him (mercifully); surely Allah is Forgiving, Merciful.