How does Chapter 5 connect the concept of selflessness and non-duality to the story of the Guru and disciple?

Chapter 5 uses the story of Devidas and the Fakir to illustrate deeper philosophical concepts. The text states that true welfare is achieved by acting without pride and burning the "pride of the body." This is the path to selflessness. The chapter explains that a wise person, having achieved this state, is not the doer of karma but acts according to previous karma. This leads to the state of non-duality, where the sense of separation vanishes. The text poetically states that only if the sun could enter darkness would a wise man have a sense of duality. As Chapter 5 concludes, this state is exemplified by Sai, for whom his "own form is the entire universe," and he resides in non-duality.