The Messenger of Allah ﷺ said, "The molar of the disbeliever on the Day of Resurrection will be like Mount Uhud, his thigh like al-Bayda, and his seat in the Hellfire will span a distance of three days' travel like that of al-Rabadhah."
قال رسول الله ﷺ: ضرس الكافر يوم القيامة مثل أحد، وفخذه مثل البيضاء، ومقعده من النار مسيرة ثلاث مثل الربذة.
Tirmidhi related it (2578) from Ali bin Hajar, who said, Muhammad bin Ammar informed us, he said, my grandfather Muhammad bin Ammar and Salih, the freed slave of Tawama, told me, from Abu Hurairah, who said, then he mentioned it (the hadith).Its isnad is hasan. Muhammad bin Ammar the grandson is hasan in his hadith, and his grandfather was not deemed reliable by anyone, rather Ibn Hibban only mentioned him among the trustworthy narrators. But he was corroborated by Salih, the freed slave of Tawama, who is known to have suffered confusion in his later years, so each of them is strengthened by the other.Tirmidhi said, "This is a hasan gharib hadith. And it is like Rabaza, as is the distance between Madinah and Rabaza. And al-Bayda is a mountain." End.