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

(561) And when it was said: "Verily, Allah's Promise is the truth, and there is no doubt about the coming of the Hour," you said: "We know not what is the Hour: we do not think it but as a conjecture, and we have no firm convincing belief (therein)."

(562) And the evil of what they did will appear to them, and that which they used to mock at will completely encircle them.

(563) Say (O Muhammad صلى الله عليه وسلم to these pagans): "Think you about all that you invoke besides Allah? Show me. what have they created of the earth? Or have they a share in (the creation of) the heavens? Bring me a Book (revealed before this), or some trace of knowledge (in support of your claims), if you are truthful!"

(564) Or say they: "He (Muhammad صلى الله عليه وسلم) has fabricated it." Say: "If I have fabricated it? still you have no power to support me against Allah. He knows best of what you say among yourselves concerning it (i.e. this Qur'an)! Sufficient is He as a witness between me and you! And He is the Oft-Forgiving, the Most Merciful."

(565) Say (O Muhammad صلى الله عليه وسلم): "I am not a new thing among the Messengers (of Allah i.e. I am not the first Messenger) nor do I know what will be done with me or with you. I only follow that which is revealed to me, and I am but a plain warner."

(566) Such shall be the dwellers of Paradise, abiding therein (forever) - a reward for what they used to do.

(567) They said: "O our people! Verily, we have heard a Book (this Qur'an) sent down after Musa (Moses), confirming what came before it: it guides to the truth and to the Straight Path (i.e. Islam).

(568) So, when you meet (in fight - Jihad in Allah's Cause) those who disbelieve, smite (their) necks till when you have killed and wounded many of them, then bind a bond firmly (on them, i.e. take them as captives). Thereafter (is the time) either for generosity (i.e. free them without ransom), or ransom (according to what benefits Islam), until the war lays down its burden. Thus [you are ordered by Allah to continue in carrying out Jihad against the disbelievers till they embrace Islam and are saved from the punishment in the Hell-fire or at least come under your protection], but if it had been Allah's Will, He Himself could certainly have punished them (without you). But (He lets you fight) in order to test some of you with others. But those who are killed in the Way of Allah, He will never let their deeds be lost.

(569) Have they not travelled through the earth, and seen what was the end of those before them? Allah destroyed them completely, and a similar (fate awaits) the disbelievers.

(570) And among them are some who listen to you (O Muhammad صلى الله عليه وسلم) till when they go out from you, they say to those who have received knowledge: "what has he said just now? Such are men whose hearts Allah has sealed, and they follow their lusts (evil desires).