Quran›Al-KahfQuran Al-Kahf 18:104ٱلَّذِينَ ضَلَّ سَعۡيُهُمۡ فِي ٱلۡحَيَوٰةِ ٱلدُّنۡيَا وَهُمۡ يَحۡسَبُونَ أَنَّهُمۡ يُحۡسِنُونَ صُنۡعًاTranslation[They are] those whose effort is lost in worldly life, while they think that they are doing well in work."18:103View on quran.com18:105