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.

And, O my people! ask forgiveness of your Lord, then turn to Him; He will send on you clouds pouring down abundance of rain and add strength to your strength, and do not turn back guilty.