Bhagavad-gītā 6.13-14
BG 6.13-14
Open the full passageसमं कायशिरोग्रीवं धारयन्नचलं स्थिरः । सम्प्रेक्ष्य नासिकाग्रं स्वं दिशश्चानवलोकयन् ॥१३॥ प्रशान्तात्मा विगतभीर्ब्रह्मचारिव्रते स्थितः । मनः संयम्य मच्चित्तो युक्त आसीत मत्परः ॥१४॥
Sanskrit
samaṁ kāya-śiro-grīvaṁ dhārayann acalaṁ sthiraḥ samprekṣya nāsikāgraṁ svaṁ diśaś cānavalokayan praśāntātmā vigata-bhīr brahmacāri-vrate sthitaḥ manaḥ saṁyamya mac-citto yukta āsīta mat-paraḥ
Translation
One should hold one's body, neck and head erect in a straight line and stare steadily at the tip of the nose. Thus, with an unagitated, subdued mind, devoid of fear, completely free from sex life, one should meditate upon Me within the heart and make Me the ultimate goal of life.