The Noble Qurʼan

إِنَّمَا ٱلْمُؤْمِنُونَ ٱلَّذِينَ إِذَا ذُكِرَ ٱللَّهُ وَجِلَتْ قُلُوبُهُمْ وَإِذَا تُلِيَتْ عَلَيْهِمْ ءَايَـٰتُهُۥ زَادَتْهُمْ إِيمَـٰنًا وَعَلَىٰ رَبِّهِمْ يَتَوَكَّلُونَ

Translation

True believers are only those whose hearts tremble at the mention of Allah, whose faith increases when His verses are recited to them, and who put their trust in their Lord.