An-Najm - 53:28

وَمَا لَهُم بِهِ مِنْ عِلْمٍ إِن يَتَّبِعُونَ إِلَّا الظَّنَّ وَإِنَّ الظَّنَّ لَا يُغْنِي مِنَ الْحَقِّ شَيْئًا
[53:28]
And they have no knowledge of it; they do not follow anything but conjecture, and surely conjecture does not avail against the truth at all.
But they have no knowledge therein. They follow nothing but conjecture; and conjecture avails nothing against Truth.
And they have no knowledge thereof. They follow but a guess, and lo! a guess can never take the place of the truth.