Surah Al-Anbya 21:18

بَلْ نَقْذِفُ بِٱلْحَقِّ عَلَى ٱلْبَـٰطِلِ فَيَدْمَغُهُۥ فَإِذَا هُوَ زَاهِقٌ ۚ وَلَكُمُ ٱلْوَيْلُ مِمَّا تَصِفُونَ

Rather, We dash the truth upon falsehood, and it destroys it, and thereupon it departs. And for you is destruction from that which you describe.

Translation: Saheeh International

Tafsir

Nay but We hurl We cast the truth faith against falsehood disbelief and it obliterates it and behold it vanishes disappears damaghahu ‘it obliterates it’ actually means ‘it struck the brain with a blow’ a blow which is fatal. …

Excerpt from Tafsir al-Jalalayn, commentary on 21:18, via Quran.com. The reader has the full commentary and 9 more tafsirs.