ثُمَّ نُكِسُواْ عَلَىٰ رُءُوسِهِمۡ لَقَدۡ عَلِمۡتَ مَا هَـٰٓؤُلَآءِ يَنطِقُونَ

Then they hung their heads. [However, they said,] ‘You certainly know that they cannot speak.’