36:8
إِنَّا جَعَلْنَا فِىٓ أَعْنَـٰقِهِمْ أَغْلَـٰلًا فَهِىَ إِلَى ٱلْأَذْقَانِ فَهُم مُّقْمَحُونَ
Indeed, We have put shackles on their necks, and they are to their chins, so they are with heads [kept] aloft.
Ya-Sin
إِنَّا جَعَلْنَا فِىٓ أَعْنَـٰقِهِمْ أَغْلَـٰلًا فَهِىَ إِلَى ٱلْأَذْقَانِ فَهُم مُّقْمَحُونَ
Indeed, We have put shackles on their necks, and they are to their chins, so they are with heads [kept] aloft.
Nearby ayahs help place verse 36:8 in sequence and meaning.
لِتُنذِرَ قَوْمًا مَّآ أُنذِرَ ءَابَآؤُهُمْ فَهُمْ غَـٰفِلُونَ
That you may warn a people whose forefathers were not warned, so they are unaware.
لَقَدْ حَقَّ ٱلْقَوْلُ عَلَىٰٓ أَكْثَرِهِمْ فَهُمْ لَا يُؤْمِنُونَ
Already the word has come into effect upon most of them, so they do not believe.
وَجَعَلْنَا مِنۢ بَيْنِ أَيْدِيهِمْ سَدًّا وَمِنْ خَلْفِهِمْ سَدًّا فَأَغْشَيْنَـٰهُمْ فَهُمْ لَا يُبْصِرُونَ
And We have put before them a barrier and behind them a barrier and covered them, so they do not see.
وَسَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ
And it is all the same for them whether you warn them or do not warn them - they will not believe.