There, seated on the seat, making the mind one-pointed, with the activities of mind and senses controlled, one should practice yoga for the purification of the self.

The instructions become more internal. Ekāgra (one point) defines the essence of dhāraṇā (concentration): directing all attention to a single object.

Yata-citta-indriya-kriya (activities of mind and senses controlled) describes the result of pratyāhāra. It is not violent suppression but natural quieting.

Ātma-viśuddhi (purification of the self) reveals the purpose: yoga cleanses the layers that obscure our essential nature. It doesn’t add anything; it removes obstacles.

The practical sequence is clear:

1. Establish the physical space (verse 11)
2. Assume the seated posture
3. Quiet the senses and mind
4. Concentrate attention
5. Maintain the practice

The Haṭha Yoga Pradīpikā extensively develops steps 2 and 3, offering detailed techniques that the Gītā only mentions. The texts are complementary.