(As-Swaffaath) 37 : 67
ثُمَّ إِنَّ لَهُمْ عَلَيْهَا لَشَوْبًا مِنْ حَمِيمٍ

Then indeed, they have above it a drink from boiling water.

See explanation 32: 20 and 44: 43-46.