The great Rishi Vishwamitra, after performing the sacrifice of the seven Rishis, had followed unseen Agni when he had been afflicted with desire and therefore he knew all as then happened.
विश्वामित्रस्तु कृत्वेष्टिं सप्तर्षीणां महामुनिः॥ पावकं कामसंतप्तमदृष्टः पृष्ठतोऽन्वगात्। तत् तेन निखिलं सर्वमवबुद्धं यथातथम्॥