The young Rama asks about breath in the body, prana and apana. In the next question, the topic is awareness of Brahman.
prana-apana
Question 231: The Story of Muni Kag Bhusunda and management of breath
In answering a question to the young Rama, Vasishtha is reminded of his encounter with Muni Kag Bhusunda, who resides in the Sumeru Hills in a kalpa tree. Upon questioning, Kag Bhusunda explains how he has both form and immortality, through both creation and dissolution, again and again, and again. Kag Bhusunda explains the process of kumbhaka, stability in prana and apana, management of the breath process.