Sura 47 Muhammad, aya 24

1. أَفَلَا يَتَدَبَّرُونَ الْقُرْآنَ أَمْ عَلَىٰ قُلُوبٍ أَقْفَالُهَا

   Then do they not reflect upon the Qur'an, or are there locks upon (their) hearts?

   47:24

Tafsiri: Saheeh International