اَنۡ تَقُوۡلَ نَفۡسٌ يّٰحَسۡرَتٰي عَلٰي مَا فَرَّطۡتُّ فِيۡ جَنۭۡ بِ اللّٰهِ وَاِنۡ كُنۡتُ لَمِنَ السّٰخِرِيۡنَۙ‏

Lest a soul should say, "Oh [how great is] my regret over what I neglected in regard to Allah and that I was among the mockers