Surah Ya-Sin 36:9
وَجَعَلْنَا مِنۢ بَيْنِ أَيْدِيهِمْ سَدًّا وَمِنْ خَلْفِهِمْ سَدًّا فَأَغْشَيْنَٰهُمْ فَهُمْ لَا يُبْصِرُونَ ٩
EnglishSahih International
And We have put before them a barrier and behind them a barrier and covered them, so they do not see.