How does the author of the Sai Satcharitra describe Sainath's role in the creation of the book, using the metaphors found in Chapter 3?

In Chapter 3, the author humbly presents himself as merely a pretext or instrument for a work that Sainath Himself is accomplishing. To illustrate this divine grace, two powerful metaphors are used. First, Sai's love is compared to that of a mother cow: 'A motherly cow feels a surge of milk; she does not withhold it without her calf... such is the love of Sai.' This shows that the teachings flow naturally and abundantly from Sai's compassion. Second, the author likens himself to a 'Chataka bird' whose small thirst is being quenched by a 'cloud of joy,' which is Sai, who rains down His grace to satisfy all devotees intensely. These metaphors emphasize that the book is a direct result of Sai's grace.