Matmonim: Daf Yomi by Rabbi David Lapin

Zevachim 81b Sin is Natural – דמים שנכנסו לכפר בהיכל פסולין

Rabbi David Lapin

Sin that is motivated by instinct is wrong but natural, and it’s process of Kappara (atonement) is different from sin that is motivated by flawed intellect and miscalculation.

Source Sheet