What is the significance of Sai's physical form (Saguna) in the path to understanding the formless Self, as described in this chapter?

Chapter 52 emphasizes the critical role of meditating on Sai's physical form, the Saguna. It explains that the subtle nature of the formless Self can only manifest after the devotee has first engaged with the Saguna form. The text states that without entering the Saguna form, the light of the Self cannot be known, as the attribute-less Parabrahma is exceedingly difficult to understand directly. By showing His own feet and using the power of love, Sai Baba made His devotees liberated while still in their bodies, mysteriously guiding them toward the supreme goal through devotion to His form.