Kṛṣṇa explains the actual purpose of work for a yogī. They use their body, mind, intelligence, and even their senses to act, but they do it for one reason only: ‘ātma-śuddhaye’, for the purpose of purification. They don’t work for profit, fame, or pleasure. Every act of service is like a scrubbing motion that cleans the mirror of the heart. Most people work to acquire more ‘stuff’, which only adds more layers of dust to the soul. But the yogī works to ‘get rid of stuff’—specifically, the inner dirt of selfishness and ego. They use the material world as a cleaning station. Kṛṣṇa is showing Arjuna that the battlefield is his purification site. By fighting with detachment, he is not incurring sin; he is scrubbing his soul clean of his past conditioning. Work is the soap of the spirit when it is done in the right consciousness. It transforms the world from a place of bondage into a place of liberation.