Surah Ibrahim, Verse 43

مُهۡطِعِينَ مُقۡنِعِي رُءُوسِهِمۡ لَا يَرۡتَدُّ إِلَيۡهِمۡ طَرۡفُهُمۡۖ وَأَفۡـِٔدَتُهُمۡ هَوَآءٞ٤٣

muh'ṭiʿīna muq'niʿī ruūsihim lā yartaddu ilayhim ṭarfuhum wa-afidatuhum hawāon

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