Can you recount the story of Das Ganu's experience at Sai Baba's feet as told in Chapter 22?

Certainly. Chapter 22 narrates an event where Das Ganu sought permission from Sai Baba to go on a pilgrimage to bathe in the holy waters at Prayag. In response, Baba instructed him, "Know this big toe of Mine to be Prayag; bathe right here." Trusting Baba's words, Das Ganu placed his head upon Sai Baba's feet. At that very moment, a miracle occurred. As described in Chapter 22, the holy waters of both the Ganga and Yamuna rivers manifested and flowed from Baba's big toe, allowing Das Ganu to have his holy bath right there and satisfying his spiritual desire.