What is the meaning behind the comparison of Sai Baba's big toe to the crescent moon in Chapter 22?

Chapter 22 draws a beautiful parallel between the longing for the crescent moon and a devotee's desire for a divine vision. Just as people eagerly look to the sky for the new moon after the dark night of the New Moon, devotees yearn for a glimpse of the divine. The chapter explains that Baba fulfills this 'curiosity for a vision' at his own feet. When he sits with his right foot over his left knee, the 'moon of the nail' on his right big toe is said to shine like the second day's moon. Devotees are instructed to fix their gaze there, and through that focal point, their spiritual longing is satisfied.