Rishivak means the Knowledge which derives from voice of Rishi, also known as Aarsha Vijnanam, is a traditional Indian concept that pertains to the knowledge or science derived from the teachings of ancient sages or rishis. It encompasses the wisdom and insights found in the sacred texts and scriptures, such as the Vedas, Upanishads,Vedangas or Sastras and various other spiritual and philosophical treatises in the Indian tradition.