Hadith #2577 (Jami' al-Tirmidhi)
Book: The Book on the Description of Hellfire
Narrator(s): Abu Sa'id al-Khudri, al-Qasim bin al-Hakam bin Kathir القاسم بن الحكم بن كثير

“The molar teeth of the disbeliever on the Day of Judgment will be like Uhud (mountain), his thigh will be like Al-Baida, and his seat in the Fire will be like the distance of three the likes of Ar-Rabadhah.” His SAW statement: “The likes of Ar-Rabadhah” means: like what is between Al-Madinah and ArRabadhah. And Al-Baidã’ is a mountain like Uhud.

Source: https://parallelquran.com/hadith/jami-al-tirmidhi-2577/