Surat As-Sajdah - سورة السجدة

وَلَوْ تَرَىٰ إِذِ الْمُجْرِمُونَ نَاكِسُو رُءُوسِهِمْ عِندَ رَبِّهِمْ رَبَّنَا أَبْصَرْنَا وَسَمِعْنَا فَارْجِعْنَا نَعْمَلْ صَالِحًا إِنَّا مُوقِنُونَ

Muhsin Khan: And if you only could see when the Mujrimun (criminals, disbelievers, polytheists, sinners, etc.) shall hang their heads before their Lord (saying): "Our Lord! We have now seen and heard, so send us back (to the world), we will do righteous good deeds. Verily! We now believe with certainty."