Surah Al-Kahf, ayah 103

قُلۡ هَلۡ نُنَبِّئُكُم بِٱلۡأَخۡسَرِينَ أَعۡمَٰلًا ١٠٣

Qul hal nunabbi'ukum bil-akhsarīna a'mālā

Say, [O Muḥammad], "Shall we [believers] inform you of the greatest losers as to [their] deeds?