Sura al-Zumar 39:58

أَوْ تَقُولَ حِينَ تَرَى ٱلْعَذَابَ لَوْ أَنَّ لِى كَرَّةً فَأَكُونَ مِنَ ٱلْمُحْسِنِينَ

aw taqūla ḥīna tara l-ʿadhāba law annā lī karratan faakūna mina l-muḥsinīna

"Or (lest) it should say when it (actually) sees the penalty: 'If only I had another chance, I should certainly be among those who do good!'