﴿ هَٰذَا يَوْمُ لَا يَنطِقُونَ ﴾

“that Day on which they will not [be able to] utter a word,”

When a man is confronted with the horrors of the Hereafter, he will find himself helpless. At that time, those who were wont to speak as if their vocabulary was inexhaustible, will be rendered speechless.