How does Chapter 16 advise a disciple to approach service to the Guru, and what are the potential consequences of doing so improperly?

Chapter 16 provides clear guidance on serving the Guru. It emphasizes that a disciple should simply surrender themselves completely to the Sadguru, as the Guru knows the disciple's pitfalls and provides the remedy. Service must be performed with sincere faith and humility, as even a leaf offered with faith is accepted with love. The chapter warns that any slight neglect in service or the use of cleverness ('Chaturai') will lead the seeker into trouble. If an offering is made with pride, the Guru turns away. Therefore, firm faith at the Guru's feet is described as absolutely necessary to attain union with Brahman.