Shloka 8
Ācāra-vidhi (Rules of Conduct) — Yudhiṣṭhira’s Inquiry and Bhīṣma’s Normative Catalogue
संधिष्वपि च सर्वेषु संनिविष्टस्तथानिल: । शरीरेषु मनुष्याणां व्यान इत्युपदिश्यते,जो मनुष्योंके शरीरोंमें और उनकी समस्त संधियोंमें भी व्याप्त है, उस वायुको “व्यान' कहते हैं
sandhiṣv api ca sarveṣu sanniviṣṭas tathānilaḥ | śarīreṣu manuṣyāṇāṃ vyāna ity upadiśyate ||
婆罗陀婆阇说道：那遍在诸关节之中、又充满人身的生命之风，被教示名为“毗耶那”（Vyāna）。在此关于生命内在构成的教法里，“毗耶那”之名标举那周遍之力：它循环流行，维系身体的统合；由此可知，达摩亦建立在对自身有序运作之理解之上。
भरद्वाज उवाच
Educational Q&A
The verse defines Vyāna as the vital wind that pervades the entire human body, including all the joints, emphasizing an all-spreading life-force that supports bodily cohesion and circulation.
In Śānti Parva’s instructional discourse, Bharadvāja is explaining the functions and names of the internal vital airs (vāyus/prāṇas), identifying which one is called Vyāna by its characteristic pervasion through the body and joints.