Translation of the verse 104 from Surah Al-Mu’minun : Number of verses 118 - - page 348 - Part 18.
The Fire will burn their faces, and therein they will grin, with displaced lips (disfigured).
The Fire will sear their faces, and they therein will have taut smiles.
(23:104) The "Fire" will scorch their faces so as to expose their jaws *97
*97) The word kalih means a face whose skin has been removed so as to expose the jaws. When somebody asked Hadrat `Abdullah bin Mas`ud the meaning of kalih, he said, "Haven't you seen the scorched head of a slaughtered animal?"
Source : Al-Mu’minun Verse 104: The Fire will sear their faces, and they therein will have taut smiles.