ثُمَّ نُكِسُوۡا عَلٰي رُءُوۡسِهِمۡۚ لَقَدۡ عَلِمۡتَ مَا هٰ٘ؤُلَآءِ يَنۡطِقُوۡنَ

Then they reversed themselves, [saying], "You have already known that these do not speak