The word(s) "righteous" appears 184 time(s) in 178 verse(s) in Quran in Mohsin Khan translation.

(71) And We gave him good in this world, and in the Hereafter he shall be of the righteous.

(72) Verily, this Qur'an guides to that which is most just and right and gives glad tidings to the believers (in the Oneness of Allah and His Messenger, Muhammad صلى الله عليه و سلم), who work deeds of righteousness, that they shall have a great reward (Paradise).

(73) And when We decide to destroy a town (population), We (first) send a definite order (to obey Allah and be righteous) to those among them [or We (first) increase in number those of its population] who lead a life of luxury. Then, they transgress therein, and thus the word (of torment) is justified against it (them). Then We destroy it with complete destruction.

(74) And whoever desires the Hereafter and strives for it, with the necessary effort due for it (i.e. does righteous deeds of Allah's Obedience) while he is a believer (in the Oneness of Allah - Islamic Monotheism) - then such are the ones whose striving shall be appreciated, (thanked and rewarded by Allah).

(75) Your Lord knows best what is in your inner-selves. If you are righteous, then, verily, He is Ever Most Forgiving to those who turn unto Him again and again in obedience, and in repentance.

(76) (He has made it) straight to give warning (to the disbelievers) of a severe punishment from Him, and to give glad tidings to the believers (in the Oneness of Allah - Islamic Monotheism), who do righteous deeds, that they shall have a fair reward (i.e. Paradise).

(77) And keep yourself (O Muhammad صلى الله عليه وسلم) patiently with those who call on their Lord (i.e. your companions who remember their Lord with glorification, praising in prayers, and other righteous deeds) morning and afternoon, seeking His Face; and let not your eyes overlook them, desiring the pomp and glitter of the life of the world; and obey not him whose heart We have made heedless of Our Remembrance, and who follows his own lusts, and whose affair (deeds) has been lost.

(78) Verily as for those who believed and did righteous deeds, certainly We shall not make the reward of anyone who does his (righteous) deeds in the most perfect manner to be lost.

(79) Wealth and children are the adornment of the life of this world. But the good righteous deeds, that last, are better with your Lord for rewards and better in respect of hope.

(80) "So we intended that their Lord should change him for them for one better in righteousness and nearer to mercy.