Chapter 16 describes the Sadguru as 'Aptakama'. What does this mean, and how does it affect his interactions with devotees?

According to Chapter 16, a Sadguru is 'Aptakama,' which means his desires are always fulfilled, making him inherently desireless. Because he has no personal needs or wants, his interactions are purely for the benefit of the devotee. He doesn't need a disciple's offerings, but he accepts a leaf or flower offered with genuine faith and love, while turning away from anything offered with pride. The chapter explains that the Sadguru's purpose is to fulfill the disciple's desire for service, thereby making the disciple desireless in turn, and to impart knowledge to the ignorant.