The word(s) "righteousness" appears 36 time(s) in 36 verse(s) in Quran in Mohsin Khan translation.

(31) And he who works deeds of righteousness, while he is a believer (in Islamic Monotheism), then he will have no fear of injustice, nor of any curtailment (of his reward).

(32) So We answered his call, and delivered him from the distress. And thus We do deliver the believers (who believe in the Oneness of Allah, abstain from evil and work righteousness).

(33) The dwellers of Paradise (i.e. those who deserved it through their Islamic Monotheistic Faith and their deeds of righteousness) will, on that Day, have the best abode, and have the fairest of places for repose.

(34) Whoever brings a good deed (i.e. Belief in the Oneness of Allah along with every deed of righteousness), will have better than its worth; and they will be safe from the terror on that Day.

(35) Saying: "Make you perfect coats of mail, and balance well the rings of chain armour, and work you (men) righteousness. Truly, I am All-Seer of what you do."

(36) O you who believe! When you hold secret counsel, do it not for sin and wrong-doing, and disobedience towards the Messenger (Muhammad صلى الله عليه وسلم), but do it for Al-Birr (righteousness) and Taqwa (virtues and piety); and fear Allah unto Whom you shall be gathered.