Muhammad 47:24
أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ أَمْ عَلَىٰ قُلُوبٍ أَقْفَالُهَآ
Afala yatadabbaroona alqur-anaam AAala quloobin aqfaluha
"Then do they not reflect upon the Qur’ān, or are there locks upon [their] hearts?"
Muhammad 47:24, translation by Sahih International
A short reflection
Will they not reflect upon the Quran, or are there locks upon their hearts?