Surah Az-Zukhruf 43:61

وَإِنَّهُۥ لَعِلْمٌ لِّلسَّاعَةِ فَلَا تَمْتَرُنَّ بِهَا وَٱتَّبِعُونِ ۚ هَـٰذَا صِرَٰطٌ مُّسْتَقِيمٌ

And indeed, he [i.e., Jesus] will be [a sign for] knowledge of the Hour, so be not in doubt of it, and follow Me. This is a straight path.

Translation: Saheeh International

Tafsir

And indeed he that is Jesus is a portent of the Hour — the arrival of it is known by the sending down of him — so do not doubt it tamtarunna the indicative nūn has been omitted for apocopation together with the wāw of the third person plural on account of two unvowelled consonants coming together but say to them …

Excerpt from Tafsir al-Jalalayn, commentary on 43:61, via Quran.com. The reader has the full commentary and 9 more tafsirs.