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

(451) Nay! Verily, he has been opposing Our Ayat (proofs, evidence, verses, lessons, signs, revelations).

(452) It spares not (any sinner), nor does it leave (anything unburnt)!

(453) To any of you that chooses to go forward (by working righteous deeds), or to remain behind (by committing sins).

(454) And they will not receive admonition unless Allah wills; He (Allah) is the One, deserving that mankind should be afraid of, and should be dutiful to Him, and should not take any Ilah (god) along with Him, and He is the One Who forgives (sins).

(455) Nay! Man (denies Resurrection and Reckoning. So he) desires to continue committing sins.

(456) A spring wherefrom the slaves of Allah will drink, causing it to gush forth abundantly.

(457) Therefore be patient (O Muhammad صلى الله عليه وسلم) with constancy to the Command of your Lord (Allah, by doing your duty to Him and by conveying His Message to mankind), and obey neither a sinner nor a disbeliever among them.

(458) Thus do We deal with the Mujrimun (polytheists, disbelievers, sinners, criminals).

(459) Verily, thus We reward the Muhsinun (good-doers. See V.2:112).

(460) (O you disbelievers)! Eat and enjoy yourselves (in this worldly life) for a little while. Verily, you are the Mujrimun (polytheists, disbelievers, sinners, criminals).