Surat Al-'An`ām - سورة الأنعام

وَلَوْ تَرَىٰ إِذْ وُقِفُوا عَلَى النَّارِ فَقَالُوا يَا لَيْتَنَا نُرَدُّ وَلَا نُكَذِّبَ بِآيَاتِ رَبِّنَا وَنَكُونَ مِنَ الْمُؤْمِنِينَ

Muhsin Khan: If you could but see when they will be held over the (Hell) Fire! They will say: "Would that we were but sent back (to the world)! Then we would not deny the Ayat (proofs, evidences, verses, lessons, revelations, etc.) of our Lord, and we would be of the believers!"