Can you explain the 'logic of the branch and the moon' as it relates to Sai Baba's big toe?

The 'logic of the branch and the moon' is an analogy for guiding a devotee's focus toward a spiritual vision, as detailed in Chapter 22. Just as one might point to a nearby tree branch to help someone locate the distant moon, Baba used his own form to guide devotees. The text describes how he would sit with his right foot over his left knee and use his fingers to frame his big toe. The 'moon of the nail' would shine within this frame. By focusing on this immediate, tangible point, devotees could fulfill their spiritual curiosity for a divine vision. Chapter 22 explains this was an easy way 'Mother Sai' showed his followers to focus their minds and perceive the divine.