What is the significance of the analogy involving the River Ganges in Chapter 47?

The analogy of the River Ganges (Bhagirathi) in Chapter 47 is used to illustrate the supreme spiritual stature and purifying power of saints like Sai Baba. The chapter poetically describes that the Ganges, by washing the feet and sins of the world, becomes soiled herself. To cleanse her own accumulated impurities, she yearns for the opportunity to have a saint's feet touch her waters, knowing that "without this, there is no deliverance from her sins." As detailed in Chapter 47, this metaphor powerfully conveys that the spiritual grace of a true saint is so immense that even a divine, purifying entity like the Ganges seeks it for her own salvation, thereby elevating the status of Sai Baba above all else.