एवं बुद्धेः परं बुद्ध्वा संस्तभ्यात्मानमात्मना | जहि शत्रुं महाबाहो कामरूपं दुरासदम् || ४३ ||
evaṁ buddheḥ paraṁ buddhvā saṁstabhyātmānam ātmanā jahi śatruṁ mahā-bāho kāma-rūpaṁ durāsadam
evam—thus; buddheḥ—to intelligence; param—superior; buddhvā—knowing; saṁstabhya—by steadying; ātmānam—the mind; ātmanā—by deliberate intelligence; jahi—conquer; śatrum—the enemy; mahā-bāho—O mighty-armed one; kāma-rūpam—in the form of lust; durāsadam—formidable.
“Thus knowing the Self to be superior to the intellect, O mighty-armed Arjuna, steady the lower self by the higher Self and slay this formidable enemy in the form of desire.”
The chapter closes with the ultimate instruction: having understood the hierarchy from sense to Self, use that higher knowledge to stabilize the mind (lower self) in the wisdom of the Self (higher self). The weapon against desire is not suppression but the light of Self-knowledge. A mind established in the understanding 'I am the Self, not this body-mind complex' finds that desire's grip naturally loosens, for it has nowhere to take root.
The ultimate practice of Karma Yoga is this: when desire arises, instead of fighting it at its own level, step into your identity as the witnessing Self — the awareness that observes desire without being swept away by it. Remind yourself: 'I am not this desire; I am the awareness in which desire appears.' Even a momentary genuine recognition of this dissolves the compulsive power of the craving. This is the final word of Chapter 3.