The word(s) "gain" appears 419 time(s) in 395 verse(s) in Quran in Muhammad Habib Shakir translation.

(81) Surely I wish that you should bear the sin committed against me and your own sin, and so you would be of the inmates of the fire, and this is the recompense of the unjust.

(82) The punishment of those who wage war against Allah and His apostle and strive to make mischief in the land is only this, that they should be murdered or crucified or their hands and their feet should be cut off on opposite sides or they should be imprisoned; this shall be as a disgrace for them in this world, and in the hereafter they shall have a grievous chastisement,

(83) And We sent after them in their footsteps Isa, son of Marium, verifying what was before him of the Taurat and We gave him the Injeel in which was guidance and light, and verifying what was before it of Taurat and a guidance and an admonition for those who guard (against evil).

(84) O you who believe! whoever from among you turns back from his religion, then Allah will bring a people, He shall love them and they shall love Him, lowly before the believers, mighty against the unbelievers, they shall strive hard in Allah's way and shall not fear the censure of any censurer; this is Allah's Face, He gives it to whom He pleases, and Allah is Ample-giving, Knowing.

(85) And if the followers of the Book had believed and guarded (against evil) We would certainly have covered their evil deeds and We would certainly have made them enter gardens of bliss

(86) Allah has not ordained (the making of) a bahirah or a saibah or a wasilah or a hami but those who disbelieve fabricate a lie against Allah, and most of them do not understand.

(87) Then if it becomes known that they both have been guilty of a sin, two others shall stand up in their place from among those who have a claim against them, the two nearest in kin; so they two should swear by Allah: Certainly our testimony is truer than the testimony of those two, and we have not exceeded the limit, for then most surely we should be of the unjust.

(88) And who is more unjust than he who forges a lie against Allah or (he who) gives the lie to His communications; surely the unjust will not be successful.

(89) See how they lie against their own souls, and that which they forged has passed away from them.

(90) And this world's life is naught but a play and an idle sport and certainly the abode of the hereafter is better for those who guard (against evil); do you not then understand?