Surah Ibrahim 14:16

مِّن وَرَآئِهِۦ جَهَنَّمُ وَيُسْقَىٰ مِن مَّآءٍ صَدِيدٍ

Before him is Hell, and he will be given a drink of purulent water.

Translation: Saheeh International

Tafsir

beyond him that is in front of him is Hell which he will enter and he is given to drink in it of festering fluid — which is what issues out of the insides of the people of the Fire mixed with pus and blood —

Excerpt from Tafsir al-Jalalayn, commentary on 14:16, via Quran.com. The reader has the full commentary and 9 more tafsirs.