Explain the analogy of the River Bhagirathi (Ganges) as used in Chapter 47.

Chapter 47 employs a beautiful and profound analogy using the River Bhagirathi, or Ganges. The text posits that while the sacred river washes away the sins of the world, she herself becomes soiled by these accumulated impurities. To wash away her own sins and find deliverance, the river desires the dust from the feet of saints, eagerly awaiting the day they will come to bathe in her waters. This metaphor powerfully illustrates the supreme purifying power of saints like Shri Sai, suggesting their holiness is so immense that even a revered entity like the Ganges seeks their presence for its own cleansing.