How does Chapter 52 explain the concept of non-duality and the devotee's relationship with the Guru?

Chapter 52 uses powerful metaphors to describe the ultimate spiritual goal: the dissolution of duality. It compares a devotee taking refuge in the Guru to a river embracing the ocean, which then "forgets its river-ness." This illustrates how the Guru absorbs the devotee, leaving no sense of separation. As further explained in Chapter 52, this union is also likened to two lamps embracing, where the state of duality vanishes and only one unified light remains. Through the power of love, the Guru mysteriously leads the faithful devotee toward this supreme goal of liberation and unity.