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