The word(s) "sin" appears 521 time(s) in 480 verse(s) in Quran in Mohsin Khan translation.

(71) And when you (Muslims) travel in the land, there is no sin on you if you shorten As-Salat (the prayer) if you fear that the disbelievers may put you in trial (attack you etc.), verily, the disbelievers are ever unto you open enemies.

(72) When you (O Messenger Muhammad صلى الله عليه وسلم) are among them, and lead them in As-Salat (the prayer), let one party of them stand up [in Salat (prayer)] with you taking their arms with them; when they finish their prostrations, let them take their positions in the rear and let the other party come up which have not yet prayed, and let them pray with you taking all the precautions and bearing arms. Those who disbelieve wish, if you were negligent of your arms and your baggage, to attack you in a single rush, but there is no sin on you if you put away your arms because of the inconvenience of rain or because you are ill, but take every precaution for yourselves. Verily, Allah has prepared a humiliating torment for the disbelievers.

(73) And argue not on behalf of those who deceive themselves. Verily, Allah does not like anyone who is a betrayer, sinner.

(74) And whoever earns sin, he earns it only against himself. And Allah is Ever All-Knowing, All-Wise.

(75) And whoever earns a fault or a sin and then throws it on to someone innocent, he has indeed burdened himself with falsehood and a manifest sin.

(76) Verily! Allah forgives not (the sin of) setting up partners (in worship) with Him, but He forgives whom He wills sins other than that, and whoever sets up partners in worship with Allah, has indeed strayed far away.

(77) And who can be better in religion than one who submits his face (himself) to Allah (i.e. follows Allah's religion of Islamic Monotheism); and he is a Muhsin (a good-doer - See V.2:112). And follows the religion of Ibrahim (Abraham) Hanifa (Islamic Monotheism - to worship none but Allah Alone). And Allah did take Ibrahim (Abraham) as a Khalil (an intimate friend)!

(78) And to Allah belongs all that is in the heavens and all that is in the earth. And Allah is Ever Encompassing all things.

(79) And if a woman fears cruelty or desertion on her husband's part, there is no sin on them both if they make terms of peace between themselves; and making peace is better. And human inner-selves are swayed by greed. But if you do good and keep away from evil, verily, Allah is Ever Well-Acquainted with what you do.

(80) Verily, those who believe, then disbelieve, then believe (again), and (again) disbelieve, and go on increasing in disbelief; Allah will not forgive them, nor guide them on the (Right) Way.