47:24
أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ أَمْ عَلَىٰ قُلُوبٍ أَقْفَالُهَآ
afalā yatadabbarūna l-qur'āna am ʿalā qulūbin aqfāluhā
Then do they not reflect upon the Qur’ān, or are there locks upon [their] hearts?
— Saheeh International
Will they not contemplate the Quran? Do they have locks on their hearts?
— M. A. S. Abdel Haleem
Do they not then think deeply in the Qur’ân, or are their hearts locked up (from understanding it)?
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali