preoccupation with material pursuits

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

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