What analogy does Chapter 18 use to describe a devotee's experience when approaching the Sadguru?

Chapter 18 presents a powerful analogy to illustrate the experience of a devotee approaching the Sadguru. It compares the devotee to a doll made of salt entering the ocean to take a bath. Just as the salt doll dissolves and becomes one with the ocean, never to return in its original form, a devotee who approaches the Sadguru merges with the divine. As the text from Chapter 18 explains, this is the profound union that occurs where the individual self dissolves into the greater reality pointed out by the Guru.