The word(s) "gain" appears 351 time(s) in 314 verse(s) in Quran in Mohsin Khan translation.

(111) But when He delivers them, behold! they rebel (disobey Allah) in the earth wrongfully. O mankind! Your rebellion (disobedience to Allah) is only against your ownselves, - a brief enjoyment of this worldly life, then (in the end) unto Us is your return, and We shall inform you of that which you used to do.

(112) Thus is the Word of your Lord justified against those who rebel (disobey Allah) that they will not believe (in the Oneness of Allah and in Muhammad صلى الله عليه وسلم as the Messenger of Allah).

(113) And most of them follow nothing but conjecture. Certainly, conjecture can be of no avail against the truth. Surely, Allah is All-Aware of what they do.

(114) Say (O Muhammad صلى الله عليه وسلم to these polytheists): "Tell me, what provision Allah has sent down to you! And you have made of it lawful and unlawful." Say (O Muhammad صلى الله عليه وسلم): "Has Allah permitted you (to do so), or do you invent a lie against Allah?"

(115) And what think those who invent a lie against Allah, on the Day of Resurrection? [i.e. Do they think that they will be forgiven and excused! Nay, they will have an eternal punishment in the Fire of Hell]. Truly, Allah is full of Bounty to mankind, but most of them are ungrateful.

(116) They (Jews, Christians and pagans) say: "Allah has begotten a son (children)." Glory is to Him! He is Rich (Free of all needs). His is all that is in the heavens and all that is in the earth. No warrant you have for this. Do you say against Allah what you know not.

(117) Say: "Verily, those who invent a lie against Allah will never be successful" -

(118) Truly! Those, against whom the Word (Wrath) of your Lord has been justified, will not believe.

(119) And who does more wrong than he who invents a lie against Allah. Such will be brought before their Lord, and the witnesses will say, "These are the ones who lied against their Lord!" No doubt! the curse of Allah is on the Zalimun (polytheists, wrong-doers, oppressors).

(120) "And O my people! Who will help me against Allah, if I drove them away? Will you not then give a thought?