9وَجَعَلنا مِن بَينِ أَيديهِم سَدًّا وَمِن خَلفِهِم سَدًّا فَأَغشَيناهُم فَهُم لا يُبصِرونَShabbir AhmedAnd We have set a bar before them and a bar behind them, and thus have covered them that they cannot see. (They neither look to the future nor derive any lesson from history).