The Prophets - 21:40
Indeed, it will come upon them suddenly and will overwhelm them. They will not be able to turn it back, nor will they be given a time limit.
Related to 38, 39, 40:
The Prophets/21:38
"They challenge, "When will that promise be fulfilled if you are truthful?"
The Prophets/21:39
If only those who disbelieve knew the moment when they will not be able to ward off the Fire from their faces and their backs, nor will they be helped.
The Prophets/21:40
Indeed, it will come upon them suddenly and will overwhelm them. They will not be able to turn it back, nor will they be given a time limit.
The Ways of Ascent/70:1
An inquirer asked about the torment to come.
The Ways of Ascent/70:2
There is none to ward it off from the disbelievers.