Eternal

They will wish to escape the Fire, but they will never leave it. Their suffering will be endless.

2:167And those who were but followers will say: If a return were possible for us, we would disown them even as they have disowned us. Thus will Allah show them their own deeds as anguish for them, and they will not emerge from the Fire.

5:37They will wish to come forth from the Fire, but they will not come forth from it. Theirs will be a lasting doom.

6:122Is he who was dead and We have raised him unto life, and set for him a light wherein he walketh among men, as him whose similitude is in utter darkness whence he cannot emerge? Thus is their conduct made fairseeming for the disbelievers.