Ni eux ni leurs ancêtres n'en savent rien. Quelle monstrueuse parole que (18:5)

﴿مَّا لَهُم بِهِ مِنْ عِلْمٍ وَلَا لِآبَائِهِمْ ۚ كَبُرَتْ كَلِمَةً تَخْرُجُ مِنْ أَفْوَاهِهِمْ ۚ إِن يَقُولُونَ إِلَّا كَذِبًا﴾
[ الكهف: 5]

Ni eux ni leurs ancêtres n'en savent rien. Quelle monstrueuse parole que celle qui sort de leurs bouches! Ce qu'ils disent n'est que mensonge.

English - Sahih International

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.

page 294 du Coran en français