Read and reflect on verse 4223 from Surah Fussilat: and so they say, [as it were:] “Our hearts are veiled from whatever thou callest us to, [O Muhammad,] and in our ears is deafness, and between us and ...
وَقَالُوا قُلُوبُنَا فِي أَكِنَّةٍ مِمَّا تَدْعُونَا إِلَيْهِ وَفِي آذَانِنَا وَقْرٌ وَمِنْ بَيْنِنَا وَبَيْنِكَ حِجَابٌ فَاعْمَلْ إِنَّنَا عَامِلُونَ
and so they say, [as it were:] “Our hearts are veiled from whatever thou callest us to, [O Muhammad,] and in our ears is deafness, and between us and thee is a barrier. Do, then, [whatever thou wilt, whereas,] behold, we shall do [as we have always done]!”