Can you explain the concept of non-duality between a devotee and Sai, using the metaphors from Chapter 52?

Chapter 52 uses several powerful metaphors to explain the concept of non-duality, where the distinction between the devotee and Sai dissolves. It compares this union to a river entering the ocean and becoming the ocean itself, or salt instantly becoming one with the ocean upon entering it. Another analogy used is of two lamps embracing, after which the state of duality vanishes and there is only one unified light. The text emphasizes that when a devotee takes refuge at Sai's feet and relinquishes their "I-ness," no duality remains, and the devotee becomes equal with Him, just as scent cannot be separated from camphor.