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Thus ends the twelfth chapter of [[Sutra Sthana]] on the merits and demerits of ''vata'', compounded by Agnivesha and redacted by Charaka. Thus concludes the [[Nirdesha Chatushka]].

Thus ends the twelfth chapter of [[Sutra Sthana]] on the merits and demerits of ''vata'', compounded by Agnivesha and redacted by Charaka. Thus concludes the [[Nirdesha Chatushka]].

=== Tattva Vimarsha ===

=== ''Tattva Vimarsha'' ===

*Three doshas, vata, pitta and kapha in their natural state help in keeping the individual’s sensory faculties normal, nourish the strength, complexion, happiness and a long life span.

*Three ''doshas'', ''vata, pitta'' and ''kapha'' in their natural state help in keeping the individual’s sensory faculties normal, nourish the strength, complexion, happiness and a long life span.

*Out of the three doshas, vata dosha is considered supreme because it regulates all functions in the body including movement of the other two doshas, such as the functions of any system concerned with regulation, signalling, conduction and control of any information or any system in our body.  

*Out of the three ''doshas'', ''vata dosha'' is considered supreme because it regulates all functions in the body including movement of the other two ''doshas'', such as the functions of any system concerned with regulation, signalling, conduction and control of any information or any system in our body.  

*Qualities of vata–guna of vata is classified into three types, viz. naisargika guna, prakrtika guna and bhautika guna:

*Qualities of ''vata guna'' of ''vata'' is classified into three types, viz. ''naisargika guna, prakrtika guna'' and ''bhautika guna'':

**Naisargika guna or pratyatma niyata guna (cardinal features) of vata dosha is sparsha (touch sensation). Along with this quality, vata possesses the qualities of ether (or the akasha mahabhuta) e.g, shabda (sound). Therefore vata possesses sparsha as well as shabda gunas as the process of anyonyanu pravesha (combination, interrelationship).

**''Naisargika guna'' or ''pratyatma niyata guna'' (cardinal features) of ''vata dosha'' is ''sparsha'' (touch sensation). Along with this quality, ''vata'' possesses the qualities of ether (or the ''akasha mahabhuta'') e.g, ''shabda'' (sound). Therefore ''vata'' possesses ''sparsha'' as well as ''shabda gunas'' as the process of ''anyonyanu pravesha'' (combination, interrelationship).

**The prakritika guna (constitutional property) of vata is raja guna , as it is told to be rajo bahulya.

**The ''prakritika guna'' (constitutional property) of ''vata'' is ''raja guna'' , as it is told to be ''rajo bahulya''.

**Bhautika  means the quality derived from the mahabhutas. The bhautika gunas of vata dosha are ruksha (dryness), shita (coldness), laghu (lightness), sukshma (minuteness), chala (movement), vishada (clearness) and khara (roughness).  

**''Bhautika'' means the quality derived from the ''mahabhutas''. The ''bhautika gunas'' of ''vata dosha'' are ''ruksha'' (dryness), ''sheeta'' (coldness), ''laghu'' (lightness), ''sukshma'' (minuteness), ''chala'' (movement), ''vishada'' (clearness) and ''khara'' (roughness).  

*vata is non-material (Avayavasamghatarahita) in nature which can also be termed as rarefied in nature and is anavasthita (unstable) too. These two properties are due to its bhautic muhushchari (constantly mobile) composition. vata is composed of akasha and vayu predominantly.  

*vata is non-material (Avayavasamghatarahita) in nature which can also be termed as rarefied in nature and is anavasthita (unstable) too. These two properties are due to its bhautic muhushchari (constantly mobile) composition. vata is composed of akasha and vayu predominantly.  

*Agni is represented by pitta, which in its non-aggravated and aggravated form performs various good and bad functions including digestion or indigestion, vision or loss of vision, normality or abnormality of body heat and complexion, valour, fear, anger, joy, attachment, happiness and other such pairs of opposing qualities.

*Agni is represented by pitta, which in its non-aggravated and aggravated form performs various good and bad functions including digestion or indigestion, vision or loss of vision, normality or abnormality of body heat and complexion, valour, fear, anger, joy, attachment, happiness and other such pairs of opposing qualities.