The word(s) "concern" appears 154 time(s) in 144 verse(s) in Quran in Muhammad Pickthal translation.

(131) concerning which then, of the bounties of thy Lord, canst thou dispute?

(132) They will cry unto them (saying): Were we not with you? They will say: Yea, verily; but ye tempted one another, and hesitated, and doubted, and vain desires beguiled you till the ordinance of Allah came to pass; and the deceiver deceived you concerning Allah;

(133) Allah hath heard the saying of her that disputeth with thee (Muhammad) concerning her husband, and complaineth unto Allah. And Allah heareth your colloquy. Lo! Allah is Hearer, Knower.

(134) And if he had invented false sayings concerning Us,

(135) A questioner questioned concerning the doom about to fall

(136) And that the foolish one among us used to speak concerning Allah an atrocious lie.

(137) And lo! we had supposed that humankind and jinn would not speak a lie concerning Allah -

(138) concerning the guilty:

(139) concerning which they are in disagreement.

(140) Yet it is not thy concern if he grow not (in grace).