Now Krishna classifies action. Sattvic action has a clear profile: it is the prescribed duty, performed without attachment, without attraction or aversion toward it, and by a person who has no craving for the result. The purest form of doing.
Three 'withouts' define it: without attachment (sanga), without like-or-dislike (raga-dvesha), without desire for fruit (aphala-prepsu). Strip away these three, and what remains is action in its cleanest state — like water with no sediment, flowing because the ground slopes, not because someone promised it a reward at the end.
Sattvic action is not cold or mechanical. It can be passionate, energetic, even joyful. What it lacks is the inner bargaining: 'I will do this so that I get that.' The doing is its own reason.