we sent no messenger but to be obeyed by allahs leave. if they when they were unjust to themselves had come to you and begged allahs forgiveness and the messenger had begged forgiveness for them indeed they would have found allah allforgiving most merciful.
وما أرسلنا من رسول إلا ليطاع بإذن الله ولو أنهم إذ ظلموا أنفسهم جاءوك فاستغفروا الله واستغفر لهم الرسول لوجدوا الله توابا رحيما