Chapter 18 uses the analogy of a salt doll entering the ocean. What does this metaphor signify in the context of a devotee approaching the Sadguru?

According to Chapter 18 of the Shri Sai Satcharitra, the metaphor of a salt doll entering the ocean to take a bath is used to describe the experience of a devotee approaching the Sadguru. Just as the salt doll can never return in its original form because it dissolves and becomes one with the ocean, a devotee who truly approaches the Guru merges with them, losing their separate identity. This profound union is presented as an irreversible and complete assimilation into the divine presence of the Guru, who is hailed as the 'teacher of the knowledge of the Self'.