Thuvayal Thavam, an act of ritual washing of one's physique and clothes along with practice of self-abnegation and self-restraint, was a practice in the religion Ayyavazhi, following the rules and regulations of Thuvayal Thavasu, held during the mid ninenteenth century in Vakaippathi according to Akilattirattu Ammanai the source of Ayyavazhi mythology.
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Thuvayal Thavam Wikipedia(Text) CC BY-SA