﴿ مُهْطِعِينَ مُقْنِعِى رُءُوسِهِمْ لَا يَرْتَدُّ إِلَيْهِمْ طَرْفُهُمْ ۖ وَأَفْـِٔدَتُهُمْ هَوَآءٌۭ ﴾

“the while they will be running confusedly to and fro, with their heads upraised [in supplication], unable to look away from what they shall behold, and their hearts an abysmal void.”

(As they come hurrying on in fear) looking to the caller, (their heads upraised) stretching their necks; it is also said that this means: lowering down their heads, (their gaze returning not to them) out of fear and terror, (and their hearts as air) empty from all goodness; it is also said: neither coming out nor going back in.