The word(s) "prostrate" appears 55 time(s) in 47 verse(s) in Quran in Muhammad Pickthal translation.

(31) And who spend the night before their Lord, prostrate and standing,

(32) And the wizards were flung prostrate,

(33) And (seeth) thine abasement among those who fall prostrate (in worship).

(34) But they denied him, and the dreadful earthquake took them, and morning found them prostrate in their dwelling place.

(35) Only those believe in Our revelations who, when they are reminded of them, fall down prostrate and hymn the praise of their Lord, and they are not scornful,

(36) (David) said: He hath wronged thee in demanding thine ewe in addition to his ewes, and lo! many partners oppress one another, save such as believe and do good works, and they are few. And David guessed that We had tried him, and he sought forgiveness of his Lord, and he bowed himself and fell down prostrate and repented.

(37) And when I have fashioned him and breathed into him of My Spirit, then fall down before him prostrate,

(38) The angels fell down prostrate, every one,

(39) He said: O Iblis! What hindereth thee from falling prostrate before that which I have created with both My hands? Art thou too proud or art thou of the high exalted?

(40) Is he who payeth adoration in the watches of the night, prostrate and standing, bewaring of the Hereafter and hoping for the mercy of his Lord, (to be accounted equal with a disbeliever)? Say (unto them, O Muhammad): Are those who know equal with those who know not? But only men of understanding will pay heed.