Sheikh `Abdul-MajeedSubh, a prominent Azharite scholar, states: There are some Muslim scholars who are of the opinion that the Hellfire is not eternal. They base their opinion on Almighty Allah’s saying, “As for those who will be wretched (on that day) they will be in the Fire; sighing and wailing will be their portion therein. Abiding there so long as the heavens and the earth endure save for that which thy Lord willeth. Lo! thy Lord is Doer of what He will. And as for those who will be glad (that day) they will be in the Garden, abiding there so long as the heavens and the earth endure save for that which thy Lord willeth: a gift unfailing.” (Hud: 106-108)
In the above-mentioned verses, Almighty Allah described living in Paradise as “a gift unfailing”. However, He does not clarify His will regarding the Hellfire and connected between the Hellfire and the eternity of the heavens and the earth bearing into consideration that the heavens and the earth are not eternal. Thus, Almighty Allah connected the continuity of the Hellfire with something not eternal and therefore, the Hellfire may not be eternal.