Then they reversed themselves, [saying], "You have already known that these do not speak!"
The Saheeh International Quran Translation
ثُمَّ نُكِسُوا۟ عَلَىٰ رُءُوسِهِمْ لَقَدْ عَلِمْتَ مَا هَٰٓؤُلَآءِ يَنطِقُونَThen they reversed themselves, [saying], "You have already known that these do not speak!"