Surah Ad-Dukhan 44:46
كَغَلْىِ ٱلْحَمِيمِ
Like the boiling of scalding water.
Translation: Saheeh International
Tafsir
as the boiling of boiling water hamīm means water of the most extreme temperature.
Excerpt from Tafsir al-Jalalayn, commentary on 44:46, via Quran.com. The reader has the full commentary and 9 more tafsirs.