Can you summarize the significance of Sai Baba's feet for his devotees as detailed in Chapter 22?

Chapter 22 highlights the immense importance of Sai Baba's feet as a focal point for devotion and spiritual fulfillment. The text mentions that many devotees would come for his vision and 'plunder personal happiness with love' by placing their heads at his feet. More specifically, the chapter describes how Baba would fulfill the devotees' longing for a divine vision through his foot. The nail on his right big toe, when he sat in a particular posture, is compared to the crescent moon, providing a tangible point for meditation. This culminates in the story of Das Ganu, where Baba's big toe becomes the holy confluence of Prayag, manifesting sacred rivers.