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IV. GENERAL FUNCTION OF THE NORMAL TRIDOSA (1) NORMAL FUNCTIONS OF VAYU Of the three Dosas, Yayu is the most predominant. It is omnipotent, has movement in all directions, is the quickest

281 of all and controls every action of the body. That is whey Sarangadhara says 'Pitta is important, Kapha is important, the Malas and Dhatus are also important, it is the Vayu, which drives them all, just as a cloud is driven by the wind, so also these go to whatever part of the body they are brought by Vayu' (Sarangadhara, Purv.5:25). Previously it has been mentioned that Vayu, Pitta and Kapha have independent actions of their own. So when we say that Pitta and Kapha are important, we do not mean that they are important or inactive in the same sense as the Malas and Dhatus are. Pitta and Kapha in these places, they can act, they can vitiate the Dhatus but they have not the power of independently moving from one place to another. It is the Vayu which has the power of imparting motion to other bodies, and it is due to the action of Vayu that the normal Pitta and Kapha circulate throughout the body alongwith the Vayu. The circulation of blood and chyle is also due to the action of Vayu. The principal function of Vayu is to sustain the body. According to Charaka, the general function of Vayu which flows within the body are (CS.Su.12:8). 1. It is tantra yantra dhara, Cakrapani in his commentary says 'Tantram ariram, tadeva yantram' so 'trantrayantra' means the human machinery. Vayu maintains this machinery and keeps it in good order.

282 2. It is the originator (Pravartaka) of every kind of action of the body. 3. It regulates and guides the mind, i.e. it restrains the mind from including in undesirable objects and guides it to desirable objects. 4. It directs senses to their respective objects. 5. It carries the sensation of sound, touch etc. 6. It is the means of the building of the particular structures (Vyubakara) of the different Dhatus of the body. 7. It connects up (Sandhana-kara) the different Dhatus of the body. 8. It is the generator of speech. 9. It is the cause of sound and touch 10. It is the root cause of the senses of hearing and touch. 11. It is the cause of the manifestations of desire and pleasure. 12. It inflames the body-fire. 13. It dries up and excess of moisture accumulated in the body. 14. It is the cause of evacuation of urine, faces and other waste matter of the body. 15. It is due to Vayu that every kind of channels, five and coarse, and foomed within the body.

283 16. It is the supreme agent to which is due to the formation of the different structures of the factal body. Sarangadhara says that it is the Vayu which is the cause of segmentation of the body - Vibhaga karananmatah Sarangadhara-Purv. 5). Charaka has described the special functions of Vayu as (CS.Su.18:49). 1. Effort 2. Inhalation and exhalation 3. Proper actions of speech, mind and body 4. Proper direction or flow of one Dhatu to the next nourishing Dhatu. 5. Proper evacuation of excretory matter. This is in striking agreement with Susruta, when he says that Vayu sustains the body by performing the following five-fold functions (SS.Su.15:3). body 1. Breathing and other rhythmic movements of the 'Praspandana'. 2. Carrying of the Dhatus, Malas etc. to their proper places - 'Udvahana'. 3. Carrying of the products of digestion to their proper places - 'Purana'. 4. Proper evacuation of excreta Viveka.

284 5. Proper maintenance of the body Dharana. These five functions can also be interpreted as those of the five Vayu of the body.