Quran 53:28 from Surah An-Najm on Divine Marvels.
وَمَا لَهُم بِهِۦ مِنۡ عِلۡمٍۖ إِن يَتَّبِعُونَ إِلَّا ٱلظَّنَّۖ وَإِنَّ ٱلظَّنَّ لَا يُغۡنِي مِنَ ٱلۡحَقِّ شَيۡـٔٗا
English translation: And not for them about it any knowledge Not they follow but assumption And indeed the assumption (does) not avail against the truth anything
Transliteration: wama lahum bihi min il'min in yattabi'una illa al-zana wa-inna al-zana la yugh'ni mina al-haqi shayan