Surah Saba 34:3

وَقَالَ ٱلَّذِينَ كَفَرُوا۟ لَا تَأْتِينَا ٱلسَّاعَةُ ۖ قُلْ بَلَىٰ وَرَبِّى لَتَأْتِيَنَّكُمْ عَـٰلِمِ ٱلْغَيْبِ ۖ لَا يَعْزُبُ عَنْهُ مِثْقَالُ ذَرَّةٍ فِى ٱلسَّمَـٰوَٰتِ وَلَا فِى ٱلْأَرْضِ وَلَآ أَصْغَرُ مِن ذَٰلِكَ وَلَآ أَكْبَرُ إِلَّا فِى كِتَـٰبٍ مُّبِينٍ

But those who disbelieve say, "The Hour will not come to us." Say, "Yes, by my Lord, it will surely come to you. [Allāh is] the Knower of the unseen." Not absent from Him is an atom's weight within the heavens or within the earth or [what is] smaller than that or greater, except that it is in a clear register -

Translation: Saheeh International

Tafsir

And those who disbelieve say ‘The Hour the Resurrection will never come to us’. Say to them ‘Yes indeed by my Lord it shall come to you — by the Knower of the Unseen read ‘ālimi’l-ghaybi as an adjectival qualification of wa-rabbī ‘by my Lord’ or read ‘ālimu’l-ghaybi as the predicate of a missing subject such as huwa …

Excerpt from Tafsir al-Jalalayn, commentary on 34:3, via Quran.com. The reader has the full commentary and 9 more tafsirs.