17. Isra · verses 46–47

وَجَعَلۡنَا عَلَىٰ قُلُوبِهِمۡ أَكِنَّةً أَن يَفۡقَهُوهُ وَفِيٓ ءَاذَانِهِمۡ وَقۡرٗاۚ وَإِذَا ذَكَرۡتَ رَبَّكَ فِي ٱلۡقُرۡءَانِ وَحۡدَهُۥ وَلَّوۡاْ عَلَىٰٓ أَدۡبَٰرِهِمۡ نُفُورٗا

WajaAAalna AAala quloobihim akinnatan an yafqahoohu wafee athanihim waqran waitha thakarta rabbaka fee alqurani wahdahu wallaw AAala adbarihim nufooran

And We put coverings over their hearts (and minds) lest they should understand the Qur´an, and deafness into their ears: when thou dost commemorate thy Lord and Him alone in the Qur´an, they turn on their backs, fleeing (from the Truth).

نَّحۡنُ أَعۡلَمُ بِمَا يَسۡتَمِعُونَ بِهِۦٓ إِذۡ يَسۡتَمِعُونَ إِلَيۡكَ وَإِذۡ هُمۡ نَجۡوَىٰٓ إِذۡ يَقُولُ ٱلظَّٰلِمُونَ إِن تَتَّبِعُونَ إِلَّا رَجُلٗا مَّسۡحُورًا

Nahnu aAAlamu bima yastamiAAoona bihi ith yastamiAAoona ilayka waith hum najwa ith yaqoolu alththalimoona in tattabiAAoona illa rajulan mashooran

We know best why it is they listen, when they listen to thee; and when they meet in private conference, behold, the wicked say, "Ye follow none other than a man bewitched!"