Can you explain the concept of non-duality between the devotee and Sai using the analogies presented in Chapter 52?

Chapter 52 uses several powerful analogies to illustrate the merging of a devotee with Sai, achieving a state of non-duality. It compares the process to a river entering the ocean and becoming the ocean itself, or salt instantly becoming one with the ocean upon entry. Another analogy is of two lamps embracing to become one light, where the state of duality vanishes. The chapter also asks rhetorically if scent can be separated from camphor or light from the sun. As stated in Chapter 52, when a devotee takes refuge at Sai’s feet and relinquishes their "I-ness," no duality remains, and they become equal with Him, just as the river forgets its river-ness when it embraces the ocean.