Yoga Sūtra Chapter Three verse 29

नाभिचक्रे कायव्यूहज्ञानम् ॥२९॥

nābhi-cakre kāya-vyūha-jñānam ||29||

On the navel wheel, knowledge of the arrangement of the body.

nābhi - navel; a navel-like cavity; the nave of a wheel; centre, central pointcakra - a circle; a mystical circle or diagram; a circle or depression of the body; a potter's wheel; a discus or sharp circular missile weaponkāya - the bodyvyūha - arrangement, placing apart, distribution; orderly arrangement of the parts of a whole;jñāna - knowing; knowledge; higher knowledge