Charak Samhita
अव्याहतगतिर्यस्य स्थानस्थः प्रकृतौ स्थितः । वायुः स्यात्सोऽधिकं जीवेद्वीतरोगः समाः शतम् ॥४॥
॥ Important role of vayu in health॥ When normal (non vitiated) vayu is at its abode with unobstructed (free) movement, is responsible for long lifespan of hundred years devoid of diseases.
english translation
avyAhatagatiryasya sthAnasthaH prakRtau sthitaH । vAyuH syAtso'dhikaM jIvedvItarogaH samAH zatam ॥4॥
hk transliteration by Sanscript