Sayyiduna Abu Sa'id (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that "'Wail' is a valley in Hell; a disbeliever will keep falling in it for forty years before reaching its depth, and 'Sa'ud' is a mountain of fire; he will keep climbing it for seventy years, then will fall into the fire."
Hadith Referenceمسند عبدالله بن مبارك / 144
Hadith Gradingمحدثین:ضعیف
Hadith Takhrij«زیادات الزهد، ابن مبارك : 96، مسند احمد : 3/75، صحیح ابن حبان (الموارد)649، سنن ترمذي: 3164۔ محدث البانی نے اسے ’’ضعیف‘‘ کہا ہے۔»