They have no knowledge of it, nor had their fathers. Grave is the word that comes out of their mouths; they speak not except a lie.
The Saheeh International Quran Translation
مَّا لَهُم بِهِۦ مِنْ عِلْمٍ وَلَا لِءَابَآئِهِمْ كَبُرَتْ كَلِمَةً تَخْرُجُ مِنْ أَفْوَٰهِهِمْ إِن يَقُولُونَ إِلَّا كَذِبًاThey have no knowledge of it, nor had their fathers. Grave is the word that comes out of their mouths; they speak not except a lie.