The Shri Sai Satcharitra is described using poetic metaphors in the text. Can you explain what it means when it's called a 'Moonstone' or a 'Shed of Nectar'?

In Chapter 25, the Shri Sai Satcharitra is described with rich metaphors to convey its spiritual value. It is called a "Shed of Nectar-like Sai Stories" where devotees can find shelter and relief from the "heat of worldly existence." The text also compares the life story to a "Moonstone (Somakant) from which the lunar nectar of Sai's tales flows." In this analogy, the devotees are like "thirsty Chakora birds," mythical creatures said to drink only moonbeams, who can be fully satisfied by this flowing nectar. These metaphors emphasize that the book is not just a collection of stories, but a divine source of grace and spiritual nourishment, considered a 'Prasad' from the Saint's feet.