What powerful analogy does Chapter 40 use to describe the union between a devotee and the Sadguru?

Chapter 40 employs the beautiful analogy of a river and an ocean to illustrate the union between a devotee and the Sadguru. It states that a river and an ocean have different names, but in essence, they are one. When they meet during the rainy season, no difference remains between them. Similarly, the chapter explains that when a devotee seeks exclusive refuge in the Sadguru with sincere devotion, the distinction between them dissolves. The Sadguru grants the devotee His own divine nature, making them one, just as the river becomes the ocean upon merging.