What does Chapter 22 reveal about the story of Das Ganu's desire to visit Prayag?

The story of Das Ganu in Chapter 22 provides a powerful testament to Sai Baba's divinity. When Das Ganu expressed his wish to go for a holy bath at the sacred confluence of Prayag, Baba instructed him that there was no need to travel. He declared, "Know this big toe of Mine to be Prayag; bathe right here." As recounted in the chapter, when the devoted Das Ganu placed his head on Baba's feet in acceptance, the holy waters of both the Ganga and Yamuna rivers miraculously manifested from Baba's big toe, fulfilling his devotee's pious desire right there in Shirdi.