How does Chapter 22 describe the specific way devotees could receive a special 'vision' from Sai Baba's foot, and what was this vision compared to?

Chapter 22 explains a unique way Sai Baba would fulfill his devotees' longing for a vision. He would often sit with his right foot placed over his left knee. Devotees' curiosity for a vision was fulfilled by focusing on his right big toe. The chapter beautifully describes how the "moon of the nail" on his big toe would shine like the crescent moon of the second day. To see this, a wise person might instruct a devotee to look through the gap formed by their index and middle fingers, directing their gaze toward the toe. Through this method, the small "crescent" became visible. This practice, as detailed in Chapter 22, connected the cosmic imagery of the moon with the divine form of the Guru.