Generated by the production of cupidity, not different from one another, without reality, connected with flesh and blood, and depending upon one another, existing outside the soul, these are all helpless and powerless. Prana and Apana, and Udana and Samana and Vyana, these five vital airs are always closely attached to the soul. Together with speech, mind, and understanding, they form the universe of eight ingredients.
लोभप्रजनसम्भूता निर्विशेषा ह्यकिंचनाः। मांसशोणितसंघाता अन्योन्यस्पोपजीविनः॥ बहिरात्मान इत्येते दीनाः कृपणजीवनः। प्राणापानावुदानश्च समानो व्यान एव च॥ अन्तरात्मनि चाप्येते नियताः पञ्च वायवः। वाड्मनोबुद्धिभिः सार्द्धमिदमष्टात्मकं जगत्॥