According to Purāṇas (Puranas), when in the ninth dvāpara (dwapara) age, the great sage Sārasvata (Saraswata) is reincarnated as Vyāsa (Vyasa), the one to divide the principle text of Vedas into four parts, God Śiva (Shiva) would descend to the mortal world as Ṛṣabha (Rishabha). Aṅgira (Angira) or Aṅgiras (Angiras) would be one of the four sons born to Ṛṣabha at that time.