According to the Brihadaranyaka Upanisad 2.2.6 , Gautama and Bharadvāja , Viśvāmitra and Jamadagni , Vashishtha and Kaśhyapa and Shandilya are seven sages ( also known as Saptarishi ) ; the progeny of these eight sages is declared to be gotras .
According to the Brihadaranyaka Upanisad 2.2.6 , Gautama and Bharadvāja , Viśvāmitra and Jamadagni , Vashishtha and Kaśhyapa , and Atri are seven sages ( also known as Saptarishi ) . The descendants of these eight sages are said to be gotras .