Rather, We dash the truth upon falsehood, and it destroys it, and (21:18)

Almuntakhab Fi Tafsir Alquran Alkarim

But what befits Our Supremacy is to dash fiction and falsehood with truth so that it is erased and vanished wherefore woe betide you for what you insolently ascribe to Allah

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(21:18) But We give falsehood a hard blow with the Truth, which breaks its head and falsehood vanishes away in no time; and there is woe for you because of the falsehoods you invent. *17

Rather, We dash the truth upon falsehood, and it destroys it, and meaning

*17) That is, "The object for which this world has been created is to stage a conflict between the Truth and falsehood. And you yourselves know that in this conflict falsehood has always been defeated and destroyed: You should, therefore, consider this reality seriously, for, if you build the system of your life on the false presumption that it is mere fun, you will meet with the same consequences as the former people did, who presumed that the world was a mere show and pastime. Therefore you should reconsider your whole attitude towards the Message which has come to you. Instead of making fun of it and scoffing at the Messenger, you should take a warning from the fate of the former peoples."
 

Rather, We dash the truth upon falsehood, and it destroys it, and meaning in Urdu

مگر ہم تو باطل پر حق کی چوٹ لگاتے ہیں جو اس کا سر توڑ دیتی ہے اور وہ دیکھتے دیکھتے مِٹ جاتا ہے اور تمہارے لیے تباہی ہے اُن باتوں کی وجہ سے جو تم بناتے ہو