Yoga Sutras of Patanjali · 3.29

नाभिचक्रे कायव्यूहज्ञानम्॥२९॥

nābhicakre kāya-vyūha-jñānam

By sanyama on the navel center, knowledge of the arrangement of the body arises.

— Yoga Sutras of Patanjali 3.29

Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).