And fear the Fire, disbelievers.

And fear the Fire, disbelievers.

(Al - Imran 3:131)

It was narrated from Abu Hurairah that the Messenger of Allah said: "When Allah created Paradise and Hell, He sent Jibril, peace be upon him, to Paradise and said: 'Look at it and at what I have prepared for its people in it.' He looked at it, then he came back and said: 'By Your Glory, no one will hear of it but he will enter it.' So He commanded that it be surrounded by hardships and said: 'Go and look at it and at what I have prepared for its people in it.' He looked at it and saw that it had been surrounded with hardships. He (Jibril) said: 'By Your Glory, I fear that no one will enter it.' He (Allah) said: 'Go and look at the Fire and at what I have prepared for its people in it.' So he looked at it and parts of it were piled upon other parts. He came back and said: 'By Your Glory, no one will enter it.' So He commanded that it be surrounded with pleasures and said: 'Go and look at it.' So he looked at it and saw that it was surrounded with pleasures. He came back and said: 'By Your Glory, I fear that no one will be saved from it and all will enter it.'"

[Sunan an-Nasa'i 3763 Book 35, Hadith 3]

Paradise and Hellfire are already created

the Hellfire complained to Allah SWT

Allah SWT allowed the Hellfire to breathe two breaths, a breath of hot air and a breath of cold air

when you suffer the heat of summer that is the Hellfire breathing hot air, when you suffer the cold of winter that is the cold air of the Hellfire

Abu Huraira reported: The Messenger of Allah (ﷺ) said: When it is hot, make delay (in the noon prayer) till it cools down, for the intensity of beat is from the Exhalation of Hell; and he also mentioned that Hellfire complained to the Lord (about the congested atmosphere) and so it was permitted to take two exhalations during the whole year, one exhalation during the winter and one exhalation during the summer

[Sahih Muslim (617) (Book 4 Chapter 75 Hadith: 1290) & Book 5, Hadith 238]