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 place a covering on their hearts so that they do not comprehend it, and We cause a heaviness in their ears; and when you mention your Lord, the Only True Lord, in the Qur'an, they turn their backs in aversion.