Word by Word Analysis

وَإِنَّ كُلًّا لَّمَّا لَيُوَفِّيَنَّهُمْ رَبُّكَ أَعْمَـٰلَهُمْ ۚ إِنَّهُۥ بِمَا يَعْمَلُونَ خَبِيرٌ 111

And indeed, each [of the believers and disbelievers] - your Lord will fully compensate them for their deeds. Indeed, He is Aware of what they do.