Krishna introduces the brilliant metaphor of the human body. He says: When the embodied soul (dehī) has fully mastered and controlled its lower nature (vaśī), it mentally renounces all actions entirely (sarva-karmāṇi manasā sannyasya). How does this master live? They sit and reside happily (āste sukhaṃ) within the city of nine gates (nava-dvāre pure). In this state, the soul knows that it is neither performing any work itself (naiva kurvan), nor is it causing any work to be done (na kārayan).