Jami` at-Tirmidhi 3326
جامع الترمذي#3326Da'ifAbu Sa’eed narrated that:The Messenger of Allah said: “As-Sa’ud is a mountain of fire, a disbeliever will be rised upon it for seventy autumns, and them similarly he will fall down it, forever.”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiHasan
In-book reference: 47:378