Surah Al-Isra, verse 48

وَجَعَلْنَا عَلَىٰ قُلُوبِهِمْ أَكِنَّةً أَن يَفْقَهُوهُ وَفِىٓ ءَاذَانِهِمْ وَقْرًۭا ۚ وَإِذَا ذَكَرْتَ رَبَّكَ فِى ٱلْقُرْءَانِ وَحْدَهُۥ وَلَّوْا۟ عَلَىٰٓ أَدْبَـٰرِهِمْ نُفُورًۭا ﴿٤٦﴾

And We have placed over their hearts coverings, lest they understand it, and in their ears deafness. And when you mention your Lord alone in the Qur’ān, they turn back in aversion.

نَّحْنُ أَعْلَمُ بِمَا يَسْتَمِعُونَ بِهِۦٓ إِذْ يَسْتَمِعُونَ إِلَيْكَ وَإِذْ هُمْ نَجْوَىٰٓ إِذْ يَقُولُ ٱلظَّـٰلِمُونَ إِن تَتَّبِعُونَ إِلَّا رَجُلًۭا مَّسْحُورًا ﴿٤٧﴾

We are most knowing of how they listen to it when they listen to you and [of] when they are in private conversation, when the wrongdoers say, "You follow not but a man affected by magic."

وَقَالُوٓا۟ أَءِذَا كُنَّا عِظَـٰمًۭا وَرُفَـٰتًا أَءِنَّا لَمَبْعُوثُونَ خَلْقًۭا جَدِيدًۭا ﴿٤٩﴾

And they say, "When we are bones and crumbled particles, will we [truly] be resurrected as a new creation?"

۞ قُلْ كُونُوا۟ حِجَارَةً أَوْ حَدِيدًا ﴿٥٠﴾

Say, "Be you stones or iron