28وَما لَهُم بِهِ مِن عِلمٍ ۖ إِن يَتَّبِعونَ إِلَّا الظَّنَّ ۖ وَإِنَّ الظَّنَّ لا يُغني مِنَ الحَقِّ شَيئًا(Irfan-ul-Quran)And they know nothing about it. They follow only assumption and surely assumption serves no purpose in comparison with certitude.