A prominent concept in Hadith is that Hell is not eternal for all its inhabitants. This understanding contradicts the clear verses in the Quran that Hell is eternal and that there is no intercession on the Day of Ressurection. The Quran warns of such false claims.
2:80 Some have said, “Hell will not touch us, except for a limited number of days.” Say, “Have you taken such a pledge from GOD—GOD never breaks His pledge—or, are you saying about GOD what you do not know?”
3:24 This is because they said, “ The hellfire will not touch us, except for a few days.” They were thus deceived in their religion by their own fabrications.
The Quran is very explicit that Hell is eternal and not temporary. There are typically two words in Arabic used in conjunction with the concept of eternity. One is khaladan ( خلدا), the other ‘abad ( أبد). The difference between these two words is similar to the English words eternity and forever. Both these terms are persistently used in reference to Hell in the Quran.
2:39 As for those who disbelieve and reject our revelations, they will be dwellers of Hell, wherein they abide forever.
72:23 “I deliver GOD’s proclamations and messages.” Those who disobey GOD and His messenger incur the fire of Hell, eternally they abide therein forever.
In addition, the below verse explains that the people in Hell will never exit and that the punishment is everlasting “muqīmun” ( مُّقِيمٌ). See also: 9:68, 11:39, 39:40, and 42:45.
5:37 They will want to exit Hell, but alas, they can never exit therefrom; their retribution is eternal.
The following verse, 11:107, often gets cited to justify that Hell is not eternal because it states that it will only last as long the heavens and earth endure.
11:107 Eternally they abide therein, for as long as the heavens and the earth endure, in accordance with the will of your Lord. Your Lord is doer of whatever He wills.
Since the Quran has no contradictions, 4:82, we know that the heavens and earth in the Hereafter will endure for all of eternity because this is what God willed, and God never breaks His promise.
35:41 GOD is the One who holds the heavens and the earth, lest they vanish. If anyone else is to hold them, they will most certainly vanish. He is Clement, Forgiving.