Qur'an 36:9 Ya-Sin

وَجَعَلْنَا مِنۢ بَيْنِ أَيْدِيهِمْ سَدًّۭا وَمِنْ خَلْفِهِمْ سَدًّۭا فَأَغْشَيْنَٰهُمْ فَهُمْ لَا يُبْصِرُونَ

And We have put before them a barrier and behind them a barrier and covered them, so they do not see.

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