The word(s) "what" appears 597 time(s) in 511 verse(s) in Quran in Muhammad Pickthal translation.

(351) So let not their speech grieve thee (O Muhammad). Lo! We know what they conceal and what proclaim.

(352) (And it is said unto the angels): Assemble those who did wrong, together with their wives and what they used to worship

(353) what aileth you that ye help not one another?

(354) Ye are requited naught save what ye did -

(355) When he said unto his father and his folk: what is it that ye worship?

(356) what then is your opinion of the Lord of the Worlds?

(357) what aileth you that ye speak not?

(358) When Allah hath created you and what ye make?

(359) And when (his son) was old enough to walk with him, (Abraham) said: O my dear son, I have seen in a dream that I must sacrifice thee. So look, what thinkest thou? He said: O my father! Do that which thou art commanded. Allah willing, thou shalt find me of the steadfast.

(360) what aileth you? How judge ye?