6:125
فَ مَن يُرِدِ ٱللَّهُ أَن يَهْدِيَ هُۥ يَشْرَحْ صَدْرَ هُۥ لِ لْ إِسْلَٰمِ وَ مَن يُرِدْ أَن يُضِلَّ هُۥ يَجْعَلْ صَدْرَ هُۥ ضَيِّقًا حَرَجًا كَأَنَّ مَا يَصَّعَّدُ فِى ٱل سَّمَآءِ كَ ذَٰلِكَ يَجْعَلُ ٱللَّهُ ٱل رِّجْسَ عَلَى ٱلَّذِينَ لَا يُؤْمِنُ ونَ
So whoever Allah wants to guide - He expands his breast to [contain] Islam; and whoever He wants to misguide - He makes his breast tight and constricted as though he were climbing into the sky. Thus does Allah place defilement upon those who do not believe.