Surah Ya-Sin — Ayah 9 (36:9)
وَجَعَلۡنَا مِنۢ بَيۡنِ أَيۡدِيهِمۡ سَدّٗا وَمِنۡ خَلۡفِهِمۡ سَدّٗا فَأَغۡشَيۡنَٰهُمۡ فَهُمۡ لَا يُبۡصِرُونَ ٩
English translation (Saheeh International)
And We have put before them a barrier and behind them a barrier and covered them, so they do not see.
Brief commentary
I placed before them a barrier to the truth and behind them another barrier. I covered their eyes from the truth so they cannot see in a manner that is of benefit to them. This happened to them after their stubborness and persistence in disbelief became apparent.