Muhammad, 24 Ayah
47:24
أَفَلَا يَتَدَبَّرُونَ ٱلۡقُرۡءَانَ أَمۡ عَلَىٰ قُلُوبٍ أَقۡفَالُهَآ ٢٤
'Afalā Yatadabbarūna Al-Qur'āna 'Am `Alá Qulūbin 'Aqfāluhā
Then do they not reflect upon the Qur'an, or are there locks upon [their] hearts?