What is the prescribed method for serving a Guru to attain spiritual knowledge and enlightenment?

To truly gain spiritual knowledge, one must serve the saints with their entire being. Chapter 0, referencing the teachings of Dnyaneshwar Maharaj, explains that service is the very doorway to the treasure of knowledge. The recommended approach is to surrender at the Guru's feet with one's body, mind, and soul, performing all services without ego. When a devotee serves in this selfless manner, the Guru will impart wisdom that enlightens the heart and ensures that doubts will not arise, leading to true understanding.