Could you explain the comparison made in Chapter 22 between the moon and Sai Baba's big toe?

Chapter 22 beautifully illustrates how Sai Baba fulfills the devotional longing of his followers. It compares the devotees' eagerness for a vision to the natural longing everyone feels for the sight of the moon after the dark New Moon night. The text describes how Baba would often sit with his right foot over his left knee. In this posture, as detailed in the chapter, the 'moon of the nail' on his right big toe would shine like the crescent moon of the second day. For devotees whose 'curiosity for the vision is great,' this sight at Baba's feet fulfilled their deep desire to see the divine, just as seeing the first sliver of the new moon brings hope and joy.