9وَجَعَلنا مِن بَينِ أَيديهِم سَدًّا وَمِن خَلفِهِم سَدًّا فَأَغشَيناهُم فَهُم لا يُبصِرونَMuhammad QadriAnd We have set a wall before them and a wall behind them, and covered the top - so they are unable to see anything.