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

(371) (It will be said): "This is what you were promised - (it is) for those oft-returning (to Allah) in sincere repentance, and those who preserve their covenant with Allah (by obeying Him in all what He has ordered, and worshipping none but Allah Alone, i.e. follow Allah's religion - Islamic Monotheism).

(372) So bear with patience (O Muhammad صلى الله عليه وسلم) all that they say, and glorify the Praises of your Lord, before the rising of the sun and before (its) setting (i.e. the Fajr, Zuhr, and 'Asr prayers) .

(373) And those (angels) who distribute (provisions, rain, and other blessings) by (Allah's) Command.

(374) Taking joy in the things which their Lord has given them. Verily, they were before this Muhsinun (good-doers. See V.2:112).

(375) They said: "We have been sent to a people who are Mujrimun (polytheists, sinners, criminals, disbelievers in Allah)

(376) Marked by your Lord for the Musrifun (polytheists, criminals, sinners - those who trespass Allah's set limits in evil-doings by committing great sins).

(377) Have they (the people of the past) transmitted this saying to these (Quraish pagans)? Nay, they are themselves a people transgressing beyond bounds (in disbelief)!

(378) There they shall pass from hand to hand a (wine) cup, free from any Laghw (dirty, false, evil vain talk between them), and free from sin (because it will be lawful for them to drink).

(379) Do their minds command them this [i.e. to tell a lie against you (Muhammad صلى الله عليه وسلم)] or are they people transgressing all bounds?

(380) So leave them alone till they meet their Day, in which they will sink into a fainting (with horror).