Al-Kahf 103

قُلْ هَلْ نُنَبِّئُكُم بِٱلْأَخْسَرِينَ أَعْمَٰلًا ﴿١٠٣﴾

Qul hal nunabbiokum bialakhsareena aAAmalan

Say (O Muhammad SAW): "Shall We tell you the greatest losers in respect of (their) deeds? The Noble Quran