اَفَلَاafalāThen do notيَتَدَبَّرُونَyatadabbarūnathey ponderالْقُرْاٰنَl-qur'āna(over) the Quranاَمْamorعَلٰىʿalāuponقُلُوبٍqulūbin(their) heartsاَقْفَالُهَاaqfāluhā(are) locksDo they not reflect on the Quran? Or are there locks on their hearts?