समं कायशिरोग्रीवं धारयन्नचलं स्थिरः। संप्रेक्ष्य नासिकाग्रं स्वं दिशश्चानवलोकयन्॥
samaṃ kāyaśirogrīvaṃ dhārayannacalaṃ sthiraḥ saṃprekṣya nāsikāgraṃ svaṃ diśaścānavalokayan
Meaning
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.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha