Kaṭhopaniṣad Adhyāya 2 Introduction—Adhyātma-yoga the Supreme Truth

Namaste. So now I want to introduce the second Adhyāya or chapter of the Kaṭha Upaniṣad. And in this chapter, Death begins his exposition of the Supreme Truth. And the supreme truth is defined in Bhagavad-gītā as: “this knowledge, both intellectual and experiential, knowing which there shall be nothing further to know.”

So the term Adhyātma-yoga appears in verse 12 of the second chapter where he says, adhyātma-yogādi-gamena. And Shankaracharya defines it as, “Concentration of the mind on the Self after withdrawing it from the outer objects is Adhyātma-yoga.”