The word(s) "keys" appears 8 time(s) in 8 verse(s) in Quran in Saheeh International translation.

(1) And with Him are the keys of the unseen; none knows them except Him. And He knows what is on the land and in the sea. Not a leaf falls but that He knows it. And no grain is there within the darknesses of the earth and no moist or dry [thing] but that it is [written] in a clear record.

(2) And [He created] the horses, mules and donkeys for you to ride and [as] adornment. And He creates that which you do not know.

(3) There is not upon the blind [any] constraint nor upon the lame constraint nor upon the ill constraint nor upon yourselves when you eat from your [own] houses or the houses of your fathers or the houses of your mothers or the houses of your brothers or the houses of your sisters or the houses of your father's brothers or the houses of your father's sisters or the houses of your mother's brothers or the houses of your mother's sisters or [from houses] whose keys you possess or [from the house] of your friend. There is no blame upon you whether you eat together or separately. But when you enter houses, give greetings of peace upon each other - a greeting from Allah, blessed and good. Thus does Allah make clear to you the verses [of ordinance] that you may understand.

(4) Indeed, Qarun was from the people of Moses, but he tyrannized them. And We gave him of treasures whose keys would burden a band of strong men; thereupon his people said to him, "Do not exult. Indeed, Allah does not like the exultant.

(5) And be moderate in your pace and lower your voice; indeed, the most disagreeable of sounds is the voice of donkeys."

(6) To Him belong the keys of the heavens and the earth. And they who disbelieve in the verses of Allah - it is those who are the losers.

(7) To Him belong the keys of the heavens and the earth. He extends provision for whom He wills and restricts [it]. Indeed He is, of all things, Knowing.

(8) As if they were alarmed donkeys