Bhagavatapurana 9.7.25

9.7.25

viśvāmitro bhṛśaṃ prīto dadāv avihatāṃ gatim /
manaḥ pṛthivyāṃ tāmadbhistejasāpo 'nilena tat //

23. Vasishta acted as Brahma and sage Agastya sang Sama hymns. Being pleased with him Indra bestowed on him a chariot of gold. 24. & 25. The greatness of Sunassepa will be told later on; having seen the resoluteness of the king and his wife in being truthful, Visvamitra was very much pleased with him and conferred on him uninterrupted light of wisdom.

26 & 27. The king resolved his mind into Prithivi (earth), Prithivi into water and water into Agni and Agni into Anila (air) and the air into the sky and the sky into Ahankara (the course of the Bhutas) and Ahankara into the Mahattatva and contemplated in Mahattatva the intellectual aspect to be Atman, to the exclusion of its objective form; and by this contemplation he burnt down nescience and having shunned that aspect also, he stood free from bondage and in his own essential nature of absolute bliss and consciousness beyond the range of description and inference.