Quran 14:43

مُهۡطِعِينَ مُقۡنِعِى رُءُوسِہِمۡ لَا يَرۡتَدُّ إِلَيۡہِمۡ طَرۡفُهُمۡ‌ۖ وَأَفۡـِٔدَتُہُمۡ هَوَآءٌ۬ ٤٣

As they rush (out of the graves), their faces will be looking upward, their eyes will not even blink, and their minds will be horrified.