5ما لَهُم بِهِ مِن عِلمٍ وَلا لِآبائِهِم ۚ كَبُرَت كَلِمَةً تَخرُجُ مِن أَفواهِهِم ۚ إِن يَقولونَ إِلّا كَذِبًا(Saheeh International)They have no knowledge of it,1 nor had their fathers. Grave is the word that comes out of their mouths; they speak not except a lie. i.e., they could not have had knowledge of something which is not true.