Surah Al-Mu'minun 23:114

قَـٰلَ إِن لَّبِثْتُمْ إِلَّا قَلِيلًا ۖ لَّوْ أَنَّكُمْ كُنتُمْ تَعْلَمُونَ

He will say, "You stayed not but a little - if only you had known.

Translation: Saheeh International

Tafsir

He exalted will say to them also by the tongue of Keeper of Hell a variant reading for qāla ‘He will say’ has qul ‘say’ ‘You tarried but a little if only you knew the length of time you tarried you would have realised that it is trivial relative to how long you will tarry in the Fire.

Excerpt from Tafsir al-Jalalayn, commentary on 23:114, via Quran.com. The reader has the full commentary and 9 more tafsirs.