What analogy does Chapter 18 use to describe the experience of a devotee approaching the Sadguru?

Chapter 18 employs a powerful metaphor to explain the profound and irreversible transformation of a devotee who approaches the Guru. It compares this individual to a doll made of salt that enters the ocean for a bath. Just as the salt doll dissolves and merges with the ocean, becoming inseparable from it and unable to return to its original form, a seeker who truly connects with the Sadguru merges into the divine consciousness. As the opening verses of Chapter 18 explain, this union is total, and the devotee cannot revert to their previous state of separation.