Quran 6 : 125
بسم الله الرحمن الرحيم
فَمَن يُرِدِ اللَّهُ أَن يَهْدِيَهُ يَشْرَحْ صَدْرَهُ لِلْإِسْلَامِۖ وَمَن يُرِدْ أَن يُضِلَّهُ يَجْعَلْ صَدْرَهُ ضَيِّقًا حَرَجًا كَأَنَّمَا يَصَّعَّدُ فِي السَّمَاءِۚ كَذَٰلِكَ يَجْعَلُ اللَّهُ الرِّجْسَ عَلَى الَّذِينَ لَا يُؤْمِنُونَ
TO JISE ALLAH CHAHE KE HIDAYAT DE, KHOL DETA HAY USKE SINA KO ISLAM KE LIE; AUR JISE CHAHE KE USKI GUMRAHI DIKHA DE, TO KAR DETA HAY USKE SINE KO TANG BANDH, GOYA ZABARDASTI AASMAN CHADHAYA JATA HAY. ISI TARAH ALLAH BANA DETA HAY NAPAK BEIMANO KO.
[‘Khol deta hay uske sina ko islam ke lie’ ya’ni Islam ki sachchai o ko woh puri tarah manne lagta hay aur uske sare shaq o subah, hichkichahate aur narajgi door kar di jati hay]
Thus, (it is a fact that) whomsoever Allah wills to guide, He opens his breast for Islam; and whomsoever He wills to let go astray, He causes his breast to become strait and constricted, as if he were climbing towards the heaven. Thus Allah lays the abomination (of flight from and hatred of Islam) on those who do not believe
[‘To open someone’s breast to Islam’ means to make him feel fully convinced of the truth of Islam and to remove all his doubts, hesitations and reluctance.]