The text mentions two types of service a Sadguru takes through books. Can you elaborate on these two methods and how they contribute to the spiritual community?

The source material in Chapter 0 outlines two distinct ways a Sadguru receives service through literary works, both of which enrich the spiritual community. The first method is when the Guru creates profound works themselves, such as the Shri Dnyaneshwari or Shri Dasbodh. The second method involves the Sadguru inspiring devotees to write their biographies. This act serves a dual purpose: the writer performs Guru service, and the resulting text, like the Shri Sai Satcharita, is then accepted for service in the form of study and Parayans by the entire congregation of devotees, fostering collective spiritual growth.