I have every idea, I fall down on my chin every time I hear the Quran recited:
17:106 With the Qur’an which We have gradually unfolded, so that you might convey it to mankind by stages. Indeed, We have sent it down step by step, as one revelation.
17:107 Say, "Believe in it or do not believe in it." Those who have been given knowledge before it, when it is recited to them, they fall down to their chins, prostrating." [Zaqan = Chin, and not face]
17:108 They say, “Glory be to our Lord. Surely, the promise of our Lord has been fulfilled."
17:109 And so they fall down on their chins, weeping, and increasing in humility.
17:110 Say, "Call upon God, or call upon the Beneficent: By whatever name you call upon Him, to Him belong the best names and attributes of perfection. And do not be too loud in your prayer, nor speak in a voice too low, but follow a way between. [7:180]