﴿ سَرَابِيلُهُم مِّن قَطِرَانٍۢ وَتَغْشَىٰ وُجُوهَهُمُ ٱلنَّارُ ﴾

“clothed in garments of black pitch, with fire veiling their faces.”

(Their raiment of pitch) of black fire, like tar; it is also said that this means: their raiment are made of very hot, trickling tar, (and the Fire covering their faces).