﴿ ٱلَّذِينَ ضَلَّ سَعْيُهُمْ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا وَهُمْ يَحْسَبُونَ أَنَّهُمْ يُحْسِنُونَ صُنْعًا ﴾

“"[It is] they whose labour has gone astray in [the pursuit of no more than] this world's life, and who none the less think that they are doing good works:”

Those whose effort goes astray in the life of this world those whose deeds are invalid while they reckon they think that they are doing good work good deeds for which they will be rewarded.