Surah Al-Hajj 22:55

وَلَا يَزَالُ ٱلَّذِينَ كَفَرُوا۟ فِى مِرْيَةٍ مِّنْهُ حَتَّىٰ تَأْتِيَهُمُ ٱلسَّاعَةُ بَغْتَةً أَوْ يَأْتِيَهُمْ عَذَابُ يَوْمٍ عَقِيمٍ

But those who disbelieve will not cease to be in doubt of it until the Hour comes upon them unexpectedly or there comes to them the punishment of a barren Day.

Translation: Saheeh International

Tafsir

And those who disbelieve will not cease to be in doubt of it that is the Qur’ān — because of what Satan had cast onto the tongue of the Prophet s and what had thereafter been nullified — until the Hour comes upon them unawares that is the Hour of their death or of resurrection comes upon them suddenly or there come …

Excerpt from Tafsir al-Jalalayn, commentary on 22:55, via Quran.com. The reader has the full commentary and 9 more tafsirs.