How does Chapter 52 explain the concept of overcoming duality through devotion to Sai?

Chapter 52 uses powerful metaphors to describe how devotion to Sai helps a devotee overcome duality. It explains that when a devotee takes refuge in Sai, the Guru ensures that no sense of duality remains, just as a river forgets its 'river-ness' when it merges with the ocean. The chapter further illustrates this point by comparing the union to two lamps embracing, at which point the state of duality vanishes and they become one light in unity. This process, as mentioned in Chapter 52, is how Sai mysteriously leads His faithful devotees toward the supreme goal of liberation while they are still in the body.