Surah Al-Haqqah 69:36

وَلَا طَعَامٌ إِلَّا مِنْ غِسْلِينٍ

Nor any food except from the discharge of wounds;

Translation: Saheeh International

Tafsir

nor any food except pus the vile excretions of the inhabitants of the Fire — or it ghislīn may denote certain trees therein —

Excerpt from Tafsir al-Jalalayn, commentary on 69:36, via Quran.com. The reader has the full commentary and 9 more tafsirs.