Dr. Mustafa Khattab, the Clear Quran - Surah Al-Kahf, ayah 104

Translation of Surah Al-Kahf, ayah 104 (18:104)

ٱلَّذِينَ ضَلَّ سَعۡيُهُمۡ فِي ٱلۡحَيَوٰةِ ٱلدُّنۡيَا وَهُمۡ يَحۡسَبُونَ أَنَّهُمۡ يُحۡسِنُونَ صُنۡعًا ١٠٤
˹They are˺ those whose efforts are in vain in this worldly life, while they think they are doing good!”