﴿ أَفَلَا يَتَدَبَّرُونَ ٱلْقُرْءَانَ أَمْ عَلَىٰ قُلُوبٍ أَقْفَالُهَآ ﴾

“Will they not, then, ponder over this Qur’an? - or are there locks upon their hearts?”

Do they not contemplate the Qur’ān? and so recognise the truth. Or am here is like bal ‘nay but’ is it that there are locks on their hearts? so they are unable to comprehend it.