Surah Al-An'aam Verse 125

فَمَن يُرِدِ اللَّهُ أَن يَهْدِيَهُ يَشْرَحْ صَدْرَهُ لِلْإِسْلَامِ ۖ وَمَن يُرِدْ أَن يُضِلَّهُ يَجْعَلْ صَدْرَهُ ضَيِّقًا حَرَجًا كَأَنَّمَا يَصَّعَّدُ فِي السَّمَاءِ ۚ كَذَٰلِكَ يَجْعَلُ اللَّهُ الرِّجْسَ عَلَى الَّذِينَ لَا يُؤْمِنُونَ

Famai yuridil laahu ai yahdiyahoo yashrah sadrahoo lil islaami wa mai yurid ai yudillaho yaj'al sadrahoo daiyiqan harajan ka annamaa yassa' 'adu fis samaaa'; kazaalika yaj'alul laahur rijsa 'alal lazeena la yu'minoon

Translation / The Meaning

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.