Dr. Mustafa Khattab, the Clear Quran - Surah Al-Baqarah, ayah 88

Translation of Surah Al-Baqarah, ayah 88 (2:88)

وَقَالُواْ قُلُوبُنَا غُلۡفُۢۚ بَل لَّعَنَهُمُ ٱللَّهُ بِكُفۡرِهِمۡ فَقَلِيلٗا مَّا يُؤۡمِنُونَ ٨٨
They say, “Our hearts are unreceptive!”1 In fact, Allah has condemned them for their disbelief. They have but little faith.

Foot notes

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Their hearts are unreceptive because they claim they have enough knowledge already.