Surah Al-Furqan 25:11

بَلْ كَذَّبُوا۟ بِٱلسَّاعَةِ ۖ وَأَعْتَدْنَا لِمَن كَذَّبَ بِٱلسَّاعَةِ سَعِيرًا

But they have denied the Hour, and We have prepared for those who deny the Hour a Blaze.

Translation: Saheeh International

Tafsir

Nay but they deny the coming of the Hour the Resurrection and We have prepared for those who deny the Hour a blaze sa‘īr a fire that has been set ablaze musa‘‘ara in other words an intense fire.

Excerpt from Tafsir al-Jalalayn, commentary on 25:11, via Quran.com. The reader has the full commentary and 9 more tafsirs.