The Saheeh International Quran Translation
ٱلَّذِينَ ضَلَّ سَعْيُهُمْ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا وَهُمْ يَحْسَبُونَ أَنَّهُمْ يُحْسِنُونَ صُنْعًا
تجهيز للطباعة
[They are] those whose effort is lost in worldly life, while they think that they are doing well in work."