Surat Az-Zumar (The Groups) - الزمر

وَٱتَّبِعُوٓا۟ أَحْسَنَ مَآ أُنزِلَ إِلَيْكُم مِّن رَّبِّكُم مِّن قَبْلِ أَن يَأْتِيَكُمُ ٱلْعَذَابُ بَغْتَةً وَأَنتُمْ لَا تَشْعُرُونَ ﴿٥٥﴾ أَن تَقُولَ نَفْسٌ يَٰحَسْرَتَىٰ عَلَىٰ مَا فَرَّطتُ فِى جَنۢبِ ٱللَّهِ وَإِن كُنتُ لَمِنَ ٱلسَّٰخِرِينَ﴿٥٦﴾ أَوْ تَقُولَ لَوْ أَنَّ ٱللَّهَ هَدَىٰنِى لَكُنتُ مِنَ ٱلْمُتَّقِينَ﴿٥٧﴾ أَوْ تَقُولَ حِينَ تَرَى ٱلْعَذَابَ لَوْ أَنَّ لِى كَرَّةً فَأَكُونَ مِنَ ٱلْمُحْسِنِينَ﴿٥٨﴾

And follow the best that has been revealed to you from your Lord before there comes to you the punishment all of a sudden while you do not even perceive; Lest a soul should say: O woe to me! for what I fell short of my duty to Allah, and most surely I was of those who laughed to scorn; Or it should say: Had Allah guided me, I would certainly have been of those who guard (against evil); Or it should say when it sees the punishment: Were there only a returning for me, I should be of the doers of good.