Can you explain the comparison made between the moon and the Sadguru's foot in Chapter 22?

Chapter 22 draws a beautiful parallel between the longing for the moon and the devotee's experience at the Sadguru's feet. It describes how, after the dark night of the New Moon, people naturally long for a sight of the crescent moon. This longing of devotees is fulfilled by the Sadguru. The chapter describes a specific posture where Baba sits with his right foot over his left knee. In this position, the nail on his right big toe shines 'like the second day's moon.' Devotees are even guided to gaze through the gap of their fingers to see this 'moon of the nail,' thus fulfilling their curiosity for a divine vision directly at his feet.