The word(s) "knows" appears 80 time(s) in 75 verse(s) in Quran in Abdullah Yusuf Ali translation.

(41) Say: "Enough is Allah for a witness between me and you: He knows what is in the heavens and on earth. And it is those who believe in vanities and reject Allah, that will perish (in the end).

(42) How many are the creatures that carry not their own sustenance? It is Allah who feeds (both) them and you: for He hears and knows (all things).

(43) But if any reject Faith, let not his rejection grieve thee: to Us is their return, and We shall tell them the truth of their deeds: for Allah knows well all that is in (men's) hearts.

(44) Verily the knowledge of the Hour is with Allah (alone). It is He Who sends down rain, and He Who knows what is in the wombs. Nor does any one know what it is that he will earn on the morrow: Nor does any one know in what land he is to die. Verily with Allah is full knowledge and He is acquainted (with all things).

(45) Now no person knows what delights of the eye are kept hidden (in reserve) for them - as a reward for their (good) deeds.

(46) Verily Allah knows those among you who keep back (men) and those who say to their brethren, "Come along to us", but come not to the fight except for just a little while.

(47) Thou mayest defer (the turn of) any of them that thou pleasest, and thou mayest receive any thou pleasest: and there is no blame on thee if thou invite one whose (turn) thou hadst set aside. This were nigher to the cooling of their eyes, the prevention of their grief, and their satisfaction - that of all of them - with that which thou hast to give them: and Allah knows (all) that is in your hearts: and Allah is All-Knowing, Most Forbearing.

(48) He knows all that goes into the earth, and all that comes out thereof; all that comes down from the sky and all that ascends thereto and He is the Most Merciful, the Oft-Forgiving.

(49) The Unbelievers say, "Never to us will come the Hour": Say, "Nay! but most surely, by my Lord, it will come upon you;- by Him Who knows the unseen,- from Whom is not hidden the least little atom in the heavens or on earth: Nor is there anything less than that, or greater, but is in the Record Perspicuous:

(50) Say: "Our Lord will gather us together and will in the end decide the matter between us (and you) in truth and justice: and He is the one to decide, the One Who knows all."