What is the story of Das Ganu and the holy rivers as told in Chapter 22?

Chapter 22 of the Shri Sai Satcharitra recounts a profound incident involving Das Ganu. When Das Ganu expressed his desire to go on a pilgrimage to bathe in the holy waters of Prayag, Sai Baba instructed him differently. Baba told him, "Know this big toe of Mine to be Prayag; bathe right here." Following this command, Das Ganu placed his head on Baba's feet. At that very moment, as the text from Chapter 22 explains, the sacred waters of both the Ganga and Yamuna rivers miraculously manifested from Baba's toe. This event powerfully illustrates that the presence of the Sadguru is the ultimate pilgrimage, and all spiritual merit can be obtained at His feet.