Surah Az-Zumar · 39:56

سُورَةُ الزُّمَرِ

أَن تَقُولَ نَفْسٌۭ يَٰحَسْرَتَىٰ عَلَىٰ مَا فَرَّطتُ فِى جَنۢبِ ٱللَّهِ وَإِن كُنتُ لَمِنَ ٱلسَّٰخِرِينَ ۝٥٦

lest any human being should say [on Judgment Day], “Alas for me for having been remiss in what is due to God, and for having been indeed one of those who scoffed [at the truth]!”

Translation: Muhammad Asad