Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) reports this saying of the Prophet (peace and blessings be upon him): "In Hell, the buttocks of the disbeliever will be the extent of three days' journey, each of his molars will be like Mount Uhud, his thigh will be like the mountain called 'Warqan', and his skin alone, apart from his flesh and his bones, will be forty cubits."
Ahmad and Abu Ya'la recorded it; its chain contains Ibn Lahi'ah, who has been declared trustworthy despite his weakness.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب صفة أهل النار / 18606
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه أبو يعلى فى المسند (1387) اخرجه احمد فى المسند (29/3) ، أخرجه مسند أحمد برقم: 10848»