How do the preface's references to Shri Dnyaneshwar Maharaj characterize the literary and spiritual nature of the Shri Sai Satcharita?

The preface uses references to Shri Dnyaneshwar Maharaj to elevate the Shri Sai Satcharita beyond a simple biography, highlighting its profound literary and spiritual qualities. According to Chapter 0, the book is described as an "excellent succulent poem" whose writing has achieved fulfillment, a concept borrowed from the Dnyaneshwari. It is celebrated for being full of illustrations, metaphors, and aesthetic taste, with the ultimate beauty being its "touch of the Supreme Truth." Spiritually, engaging with it is likened to satisfying Shri Sai-Paramatma with a "sacrifice of knowledge (Jnana-yagna)," promising ultimate union with the divine.