وَقَالُواْ قُلُوبُنَا فِيٓ أَكِنَّةٖ مِّمَّا تَدۡعُونَآ إِلَيۡهِ وَفِيٓ ءَاذَانِنَا وَقۡرٞ وَمِنۢ بَيۡنِنَا وَبَيۡنِكَ حِجَابٞ فَٱعۡمَلۡ إِنَّنَا عَٰمِلُونَ

Wa qaaloo quloobunaa feee akinnatim mimmaa tad'oonaaa ilaihi wa feee aazaaninaa waqrunw wa mim baininaa wa bainika hijaabun fa'mal innanaa 'aamiloon

They say: "Our hearts are under veils, (concealed) from that to which thou dost invite us, and in our ears in a deafness, and between us and thee is a screen: so do thou (what thou wilt); for us, we shall do (what we will!)"

— Fusilat (فُصِّلَت), 41:5