Al-Baqarah - 88

﴿وَقَالُوا قُلُوبُنَا غُلْفٌ ۚ بَلْ لَعَنَهُمُ اللَّهُ بِكُفْرِهِمْ فَقَلِيلًا مَا يُؤْمِنُونَ﴾

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(88) And they said, "Our hearts are wrapped."[33] But, [in fact], Allāh has cursed them for their disbelief, so little is it that they believe.