21:65
ثُمَّ نُكِسُ وا۟ عَلَىٰ رُءُوسِ هِمْ لَ قَدْ عَلِمْ تَ مَا هَٰٓؤُلَآءِ يَنطِقُ ونَ
Then they reversed themselves, [saying], "You have already known that these do not speak!"
32:12
وَ لَوْ تَرَىٰٓ إِذِ ٱلْ مُجْرِمُونَ نَاكِسُوا۟ رُءُوسِ هِمْ عِندَ رَبِّ هِمْ رَبَّ نَآ أَبْصَرْ نَا وَ سَمِعْ نَا فَ ٱرْجِعْ نَا نَعْمَلْ صَٰلِحًا إِنَّ ا مُوقِنُونَ
If you could but see when the criminals are hanging their heads before their Lord, [saying], "Our Lord, we have seen and heard, so return us [to the world]; we will work righteousness. Indeed, we are [now] certain."