Qur'an, Al-Isra, Surah 17:107-109
I say to you that you must either believe the Quran or deny it. Some people were given spiritual knowledge before the Quran was revealed. When the Quran is recited to them, they exclaim: 'Glory be to our Lord; his promise has been fulfilled.' They fall down on their faces, and weep; and as they listen to the Quran, their humility increases.