The preface to the Shri Sai Satcharita references other scriptures. What are they, and what is the key message conveyed through these references?

The preface found in Chapter 0 makes several scriptural references to emphasize its spiritual value. It first mentions the author's hope that the Satcharita would be recited daily, similar to Saraswati Gangadhar's 'Guru Charitra.' More significantly, it quotes extensively from Chapter 18 of the 'Shri Dnyaneshwari.' The key message conveyed through these verses is the profound merit of sharing sacred knowledge with devotees. This act is equated to a 'sacrifice of knowledge' (Jnana-yagna) and is said to satisfy the Supreme Soul, ultimately leading the devotee to become one with the divine after the body perishes.