Much personal behavior in classical India, at least ideally, was regulated according to caste. Each caste was associated with a particular color, with a part of the body of the god Purusha, and with a set of duties.
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Beyond caste, behavior was ideally defined in terms of four stages of life, at least for the first three varna groups. Each new stage was marked by a samskara, a ritual initiating the person into this new phase of life.