Surah Al-Baqarah 2:24

فَإِن لَّمْ تَفْعَلُوا۟ وَلَن تَفْعَلُوا۟ فَٱتَّقُوا۟ ٱلنَّارَ ٱلَّتِى وَقُودُهَا ٱلنَّاسُ وَٱلْحِجَارَةُ ۖ أُعِدَّتْ لِلْكَـٰفِرِينَ

But if you do not - and you will never be able to - then fear the Fire, whose fuel is people and stones, prepared for the disbelievers.

Translation: Saheeh International

Tafsir

And if you do not do what was mentioned because you are incapable and you will not a parenthetical statement that is never will you be able to because of its inimitability then fear through belief in God and belief that this is not the words of a human the Fire whose fuel is men disbelievers and stones like their very …

Excerpt from Tafsir al-Jalalayn, commentary on 2:24, via Quran.com. The reader has the full commentary and 9 more tafsirs.