The word(s) "fell" appears 16 time(s) in 16 verse(s) in Quran in Mohsin Khan translation.

(11) Those were they unto whom Allah bestowed His Grace from among the Prophets, of the offspring of Adam, and of those whom We carried (in the ship) with Nuh (Noah), and of the offspring of Ibrahim (Abraham) and Israel, and from among those whom We guided and chose. When the Verses of the Most Gracious (Allah) were recited unto them, they fell down prostrate and weeping.

(12) So the magicians fell down prostrate. They said: "We believe in the Lord of Harun (Aaron) and Musa (Moses)."

(13) And the sorcerers fell down prostrate.

(14) Then when We decreed death for him [Sulaiman (Solomon)], nothing informed them (jinn) of his death except a little worm of the earth, which kept (slowly) gnawing away at his stick. So when he fell down, the jinn saw clearly that if they had known the Unseen, they would not have stayed in the humiliating torment.

(15) [Dawud (David)] said (immediately without listening to the opponent): "He has wronged you in demanding your ewe in addition to his ewes. And, verily, many partners oppress one another, except those who believe and do righteous good deeds, and they are few." And Dawud (David) guessed that We have tried him and he sought Forgiveness of his Lord, and he fell down prostrate and turned (to Allah) in repentance.

(16) And not an Ayah (sign, etc.) We showed them but it was greater than its fellow , and We seized them with torment, in order that they might turn [from their polytheism to Allah's religion (Islamic Monotheism)].