In the last section of Shankaracharya's Vashtiyam on this one he is talking about our situation that even if we know that we are Brahman and Siddha Hone parvi Atmaikata began Varam Varkari Khahejani parvi Thirnehihota. Krishna says that material nature does everything consciousness is the witness it does nothing. One who realizes that realizes I am the non-active consciousness non-doer consciousness that is freedom no wish for Mahaj.
Swami Sarvapriyananda teaches the Katha Upanishad, one of India's most revered texts which is also a part of the Vedas. It is a collection of philosophical poems representing a conversation between the sage Naciketas and Yama (god of death). They discuss the nature of Atman, Brahman and Moksha(liberation).