Kal Muhl, the Prophet ﷺsaid: 'Like boiling oil, such that when it is brought close to his face, the skin of his face will fall off into it."
عَنِ النَّبِيِّ ﷺ فِي قَوْلِهِ (كَالْمُهْلِ ) قَالَ كَعَكَرِ الزَّيْتِ فَإِذَا قَرَّبَهُ إِلَى وَجْهِهِ سَقَطَتْ فَرْوَةُ وَجْهِهِ فِيهِ