وَقَالُوا قُلُوبُنَا غُلْفٌ بَل لَّعَنَهُمُ اللَّهُ بِكُفْرِهِمْ فَقَلِيلًا مَّا يُؤْمِنُونَ
And they say, ‘Our hearts are uncircumcised.’ Rather, Allah has cursed them for their unfaith, so few of them have faith.
Agha Ali Puya Commentary
Commentary on Quran 2:88
[Pooya/Ali Commentary 2:88] Ghulf can be interpreted either to say "our hearts are covered and encased, therefore, we cannot hear and understand that which the Holy Prophet says", or "our hearts are (already) the repositories (of knowledge), therefore, we do not need any guidance". In either case, devoid of iman, they deserve to be cursed.