Al-Baqarah - 2:88

وَقَالُواْ قُلُوبُنَا غُلْفٌ بَل لَّعَنَهُمُ اللَّه بِكُفْرِهِمْ فَقَلِيلاً مَّا يُؤْمِنُونَ
[2:88]
And they say: Our hearts are covered. Nay, Allah has cursed them on account of their unbelief; so little it is that they believe.
They say, "Our hearts are the wrappings (which preserve Allah's Word: we need no more)." Nay, Allah's curse is on them for their blasphemy: Little is it they believe.
And they say: Our hearts are hardened. Nay, but Allah hath cursed them for their unbelief. Little is that which they believe.