Not graded
Mishkat al-Masabih 5678
وَعَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ فِي قَوْله: (كَالْمهْلِ) أَيْ كَعَكَرِ الزَّيْتِ فَإِذَا قُرِّبَ إِلَى وَجْهِهِ سَقَطت فَرْوَة وَجهه فِيهِ رَوَاهُ التِّرْمِذِيّّّّّّّ
He reported the Prophet as saying about God's words, "Like molten copper[*]," that it is like the sediment of olive-oil, and that when it approaches one's face the skin of one's face will fall into it." *Quran; 18:29; 44:45; 70:8 Tirmidhi transmitted it.
Cited in Mishkat al-Masabih (No. 5678).