Surah Az-Zumar (The Successive Groups), Verse 56

اَنْ تَقُوْلَ نَفْسٌ یّٰحَسْرَتٰی عَلٰی مَا فَرَّطْتُ فِیْ جَنْۢبِ اللّٰهِ وَاِنْ كُنْتُ لَمِنَ السّٰخِرِیْنَ ۟

An taqoola nafsuny yaahasrataa 'alaa maa farrattu fee jambil laahi wa in kuntu laminas saakhireen

“"Lest the soul should (then) say: 'Ah! Woe is me!- In that I neglected (my duty) towards Allah, and was but among those who mocked!'-”

Quran 39:56 (Yusuf Ali Translation)