The molar tooth of an unbeliever or the canine teeth of an unbeliever will be like Uhud and the thickness of his skin a three night's journey.
Sahih Muslim Book 53, Hadith 54
← Previous Hadith When the inmates of Paradise would go to Paradise and the inmates of Hell would go to Hell, death would be called and it would be placed between the Paradise and the Hell and then slaughtered and then the announcer would announce: O inmates of Paradise, no death. O inmates of Hell-Fire, no death. And it would increase the delight of the inmates of Paradise and it would increase the grief of the inmates of Hell-Fire.

Sahih Muslim Book 53, Hadith 53 Next Hadith → The distance of the two shoulders of the non-believer in Hell will be a three-day journey for a swift rider.

Sahih Muslim Book 53, Hadith 55