The word(s) "gain" appears 364 time(s) in 322 verse(s) in Quran in Abdullah Yusuf Ali translation.

(251) They will say to their skins: "Why bear ye witness against us?" They will say: "Allah hath given us speech,- (He) Who giveth speech to everything: He created you for the first time, and unto Him were ye to return.

(252) "Ye did not seek to hide yourselves, lest your hearing, your sight, and your skins should bear witness against you! But ye did think that Allah knew not many of the things that ye used to do!

(253) And We have destined for them intimate companions (of like nature), who made alluring to them what was before them and behind them; and the sentence among the previous generations of Jinns and men, who have passed away, is proved against them; for they are utterly lost.

(254) The Unbelievers say: "Listen not to this Qur'an, but talk at random in the midst of its (reading), that ye may gain the upper hand!"

(255) Whoever works righteousness benefits his own soul; whoever works evil, it is against his own soul: nor is thy Lord ever unjust (in the least) to His Servants.

(256) What! Do they say, "He has forged a falsehood against Allah"? But if Allah willed, He could seal up thy heart. And Allah blots out Vanity, and proves the Truth by His Words. For He knows well the secrets of all hearts.

(257) But indeed if any do help and defend themselves after a wrong (done) to them, against such there is no cause of blame.

(258) The blame is only against those who oppress men and wrong-doing and insolently transgress beyond bounds through the land, defying right and justice: for such there will be a penalty grievous.

(259) And were it not that (all) men might become of one (evil) way of life, We would provide, for everyone that blasphemes against (Allah) Most Gracious, silver roofs for their houses and (silver) stair-ways on which to go up,

(260) Thus did he make fools of his people, and they obeyed him: truly were they a people rebellious (against Allah).