How does Chapter 22 describe the significance of the Sadguru's feet and the 'moon of the nail'?

In Chapter 22, the Sadguru's feet are presented as the ultimate source of happiness and fulfillment for devotees. The text draws a beautiful parallel between a devotee's longing for the Guru and the public's longing for the sight of the crescent moon after the dark New Moon night. This longing is fulfilled when Baba sits with his right foot over his left knee. Devotees are instructed to gaze at the "moon of the nail" on his right big toe, which shines like the second day's moon. As detailed in Chapter 22, this act fulfills the devotee's curiosity for a vision, suggesting that the divine can be perceived in the seemingly small details of the Guru's form, and that his feet are a focal point for spiritual realization.