The word(s) "what" appears 845 time(s) in 697 verse(s) in Quran in Mohsin Khan translation.

(161) And (remember) when Allah will say (on the Day of Resurrection): "O 'Îsa (Jesus), son of Maryam (Mary)! Did you say unto men: 'Worship me and my mother as two gods besides Allah?' " He will say: "Glory be to You! It was not for me to say what I had no right (to say). Had I said such a thing, You would surely have known it. You know what is in my inner-self though I do not know what is in Yours; truly, You, only You, are the All-Knower of all that is hidden (and unseen).

(162) "Never did I say to them aught except what You (Allah) did command me to say: 'Worship Allah, my Lord and your Lord.' And I was a witness over them while I dwelt amongst them, but when You took me up, You were the Watcher over them; and You are a Witness to all things. (This is a great admonition and warning to the Christians of the whole world).

(163) And He is Allah (to be worshipped Alone) in the heavens and on the earth; He knows what you conceal and what you reveal, and He knows what you earn (good or bad). (See V.43:84)

(164) Say (O Muhammad صلى الله عليه وسلم): "Travel in the land and see what was the end of those who rejected truth."

(165) And to Him belongs whatsoever exists in the night and the day, and He is the All-Hearing, the All-Knowing."

(166) Say (O Muhammad صلى الله عليه وسلم): "what thing is the most great in witness?" Say: "Allah (the Most Great!) is Witness between me and you; this Qur'an has been revealed to me that I may therewith warn you and whomsoever it may reach. Can you verily bear witness that besides Allah there are other alihah (gods)?" Say "I bear no (such) witness!" Say: "But in truth He (Allah) is the only one Ilah (God). And truly I am innocent of what you join in worship with Him."

(167) Nay, it has become manifest to them what they had been concealing before. But if they were returned (to the world), they would certainly revert to that which they were forbidden. And indeed they are liars.

(168) Nay! To Him Alone you would call, and, if He wills, He would remove that (distress) for which you call upon Him, and you would forget at that time whatever partners you joined (with Him in worship)!

(169) Say (O Muhammad صلى الله عليه وسلم): "I don't tell you that with me are the treasures of Allah, nor (that) I know the Unseen; nor I tell you that I am an angel. I but follow what is revealed to me." Say: "Are the blind and the one who sees equal? Will you not then take thought?"

(170) Say (O Muhammad صلى الله عليه وسلم): "I am on clear proof from my Lord (Islamic Monotheism), but you deny it (the truth that has come to me from Allah). I have not gotten what you are asking for impatiently (the torment). The decision is only for Allah, He declares the truth, and He is the Best of judges."