The Messenger of Allah ﷺ said, "On the Day of Resurrection, the molar tooth of the disbeliever will be like Mount Uhud, the thickness of his skin will be seventy cubits, his thigh will be like Mount Warqan, and his seat in the Fire will be like the distance between me and al-Rabadhah."
قال رسول الله ﷺ: ضرس الكافر يوم القيامة مثل أحد، وعرض جلده سبعون ذراعا، وفخذه مثل ورقان، ومقعده من النار مثل ما بيني وبين الربذة.
Ahmad (8345) narrated it from Rubai bin Ibrahim, who said, Abdul-Rahman bin Ishaq narrated to us, from Saeed bin Abu Saeed, from Abu Hurairah, who said, and he mentioned it.Its chain is hasan because of Abdul-Rahman bin Ishaq, who is the Madani, the Amiri, the Qurashi, for his hadith is hasan.