Vishvamitra Rishi and Sage Vasishtha once had an argument. Vishvamitra Rishi said to Sage Vasishtha that tapas, or intense meditation on the Supreme Truth is greater than anything else in this world. Vasishta did not agree and said that that Satsanga – the company of truth (in the company of those who have realized truth) – was superior to Tapas. The argument continued for a while and finally they decided to approach to Brahma to decide which was great Tapas or Satsang. Brahma directed them to Shiva as he was not able to give them a proper answer. Shiva directed them to Vishnu as he was not interested in this argument. Vishnu too found no interest in the argument and directed them to Adi Sesha. Adi Sesha, the thousand-headed snake on whom Srihari Vishnu reclines, was ready to settle the argument. As per Hindu tradition it is believed that Adi Sesha holds the weight of the earth on his thousand heads. So before settling the dispute, He asked Vishvamitra Rishi and Sage Vasish