Al Kahf Ayah 104

ٱلَّذِينَ ضَلَّ سَعْيُهُمْ فِى ٱلْحَيَوٲةِ ٱلدُّنْيَا وَهُمْ يَحْسَبُونَ أَنَّهُمْ يُحْسِنُونَ صُنْعًا ١٠٤ ?They are? those whose efforts are in vain in this worldly life, while they think they are doing good!”