How does Chapter 52 explain the concept of non-duality and a devotee's merging with Sai?

Chapter 52 uses several powerful analogies to illustrate the merging of a devotee with Sai and the dissolution of duality. It explains that when a devotee takes refuge at Sai's feet, they relinquish their "I-ness" and become equal with Him. This process is compared to a river entering the ocean and becoming the ocean itself, or salt instantly becoming one with the ocean upon entering it. The chapter also poses rhetorical questions, asking if scent can remain separate from camphor or light from the sun, to emphasize that upon taking refuge, no sense of duality remains between the devotee and Sai.