Can you explain the analogy of the River Ganges used in Chapter 47?

The analogy of the River Bhagirathi, or Ganges, in Chapter 47 is used to exalt the purifying power of saints like Sai Baba. The text explains that the Ganges, by washing the feet and sins of the world, becomes soiled herself with impurities. To wash away these accumulated impurities, the river yearns for the "dust from the feet of saints." As detailed in the chapter, the river knows that without the touch of a saint's feet, "there is no deliverance from her sins." This powerful metaphor illustrates that the spiritual purity of a true saint is so immense that even a sacred entity like the Ganges seeks it out for its own purification.