What is the significance of Sai's physical form (Saguna) in the path to understanding the formless Absolute, according to Chapter 52?

Chapter 52 presents a profound teaching on the importance of the Guru's physical or 'Saguna' form. It states that without first engaging with the Saguna form, the light of the Self cannot be known, because the formless Absolute, or Parabrahma, is 'entirely difficult to understand' on its own. The chapter teaches that by meditating immensely on Sai's physical form, a transformation occurs where the subtle nature of the Self manifests as the perception of the Saguna form vanishes. This reveals that Sai used His form to show His feet and, through love, lead devotees toward the ultimate, formless goal.