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

Chapter 52 beautifully illustrates the concept of non-duality, or the merging of the devotee with the Guru, through several powerful analogies. It states that when a devotee takes refuge at Sai's feet, the sense of duality vanishes. This is compared to a river entering the ocean and losing its separate identity to become the ocean itself. Other metaphors used include two lamps embracing to become one single light, the scent being inseparable from camphor, and salt instantly becoming one with the ocean upon entering it. Through these examples, the chapter teaches that by relinquishing their 'I-ness' and ego, devotees become equal to and one with Sai.