Surah Ibrahim Verse 43

مُهْطِعِينَ مُقْنِعِي رُءُوسِهِمْ لَا يَرْتَدُّ إِلَيْهِمْ طَرْفُهُمْ ۖ وَأَفْئِدَتُهُمْ هَوَاءٌ

Racing ahead, their heads raised up, their glance does not come back to them, and their hearts are void