Wa ja'alnaa 'alaa quloo bihim akinnatan any yafqahoohu wa feee aazaanihim waqraa; wa izaa zakarta Rabbaka fil Quraani wahdahoo wallaw 'alaaa adbaarihim nufooraa
And We put coverings over their hearts (and minds) lest they should understand the Qur'an, and deafness into their ears: when thou dost commemorate thy Lord and Him alone in the Qur'an, they turn on their backs, fleeing (from the Truth).