مُهۡطِعِينَ مُقۡنِعِي رُءُوسِهِمۡ لَا يَرۡتَدُّ إِلَيۡهِمۡ طَرۡفُهُمۡۖ وَأَفۡـِٔدَتُهُمۡ هَوَآءٞ

Scrambling with their heads upturned, there will be a fixed gaze in their eyes, and their hearts will be vacant.