﴿ وَلَا يَأْتُونَكَ بِمَثَلٍ إِلَّا جِئْنَٰكَ بِٱلْحَقِّ وَأَحْسَنَ تَفْسِيرًا ﴾

“and [that] they [who deny the truth] might never taunt thee with any deceptive half-truth without Our conveying to thee the [full] truth and [providing thee] with the best explanation.”

And they do not bring you any similitude to invalidate your mission but that We bring you the truth that refutes it and what is better as exposition explanation.