An-Najm (The Star)

Surah 53 · Verse 28

and they do not have any knowledge about it, they follow nothing but conjecture, and conjecture is certainly of no use in anything compared to the truth.

وَمَا لَهُمْ بِهِ مِنْ عِلْمٍ ۖ إِنْ يَتَّبِعُونَ إِلَّا الظَّنَّ ۖ وَإِنَّ الظَّنَّ لَا يُغْنِي مِنَ الْحَقِّ شَيْئًا