Can you explain the metaphors used in Chapter 3 to describe Sainath's grace and the author's role in writing the Satcharitra?

Chapter 3 uses powerful metaphors to convey the author's perspective on the creation of the Satcharitra. The author humbly positions himself as a mere pretext, asserting that Sainath Himself is the true doer of the work. This grace is compared to a motherly cow that naturally feels a surge of milk for her calf, suggesting that bestowing love and grace is Sai's intrinsic nature. The author further illustrates this by likening himself to a thirsty 'Chataka bird' and Sai to a 'cloud of joy' that rains down grace, not just to quench his small thirst but to intensely satisfy all devotees. As Chapter 3 reveals, these metaphors emphasize that the holy book is a direct manifestation of Sai's divine compassion.