What is the connection between a Guru's grace and the creation of spiritual literature that inspires devotion?

The source material in Chapter 0 draws a direct and profound connection between the two. It posits that a spiritual book written solely on the strength of scholarship and intellect, devoid of Guru's grace, will not be eternal or possess the qualities of inspiration and divine gift. Such a work cannot leave a deep impression on seekers or instill genuine faith. The Shri Sai Satcharita is presented as a 'grace-filled (Prasad-janya)' book, and its very writing is described as the 'fruit of that grace' that Baba bestowed upon Annasaheb. This implies that authentic spiritual literature capable of fostering devotion is not a mere human effort but a manifestation of the Guru's blessing.