Word by Word Analysis

بَلْ قُلُوبُهُمْ فِى غَمْرَةٍ مِّنْ هَـٰذَا وَلَهُمْ أَعْمَـٰلٌ مِّن دُونِ ذَٰلِكَ هُمْ لَهَا عَـٰمِلُونَ 63

But their hearts are covered with confusion over this, and they have [evil] deeds besides that [i.e., disbelief] which they are doing,