Sanskrit

समं कायशिरोग्रीवं धारयन्नचलं स्थिरः। संप्रेक्ष्य नासिकाग्रं स्वं दिशश्चानवलोकयन्।।6.13।।

Summary

Let him hold his body, head, and neck erect, motionless and steady; let him look fixedly at the tip of his nose, turning neither to the right nor to the left.