One must perform the Karma (action) abiding the Shastras (scriptures), for according to the laws of Karma , the consequences of a good action have to be borne in the form of Punya (merit) and that of bad actions have to be borne in the form of Paap (sin). But the fire of knowledge burns out Karmaphal (consequences of action ) when the doer does any act without the sense of doer ship. It means the doer gives the credit of doership to the God or to the Guru, but not himself. All the actions done by such a Karmayogi are Akarma Karma (those actions that are non-actions), which means that such a doer does not have to bear the consequences of his Karma.-Tanuja Thakur