According to Chapter 16, what is the nature of a Sadguru and what is the proper way for a disciple to interact with him?

Chapter 16 of the Sai Satcharitra explains that a Sadguru is always one whose desires are fulfilled (Aptakama) and is an ocean of Truth, Consciousness, and Bliss. He has taken a body solely for the purpose of uplifting the poor and lowly. A disciple should approach the Sadguru with sincere faith, as He accepts offerings made with love but turns away from those offered with pride. The chapter emphasizes that a disciple should simply surrender to the Sadguru, as any cleverness or neglect in service can lead to trouble. By serving the Guru with faith, the servant can attain union with Brahman.