What is the role of Sai's physical form (Saguna) in spiritual realization, according to Chapter 52?

In Chapter 52, the importance of meditating on Sai's physical, or Saguna, form is emphasized as a crucial step toward spiritual understanding. The text explains that the ultimate reality, the Parabrahma without attributes, is entirely difficult to understand directly. Therefore, it posits that without first entering the Saguna form, the light of the Self cannot be known. By meditating immensely on Sai's physical form, the devotee is able to progress to a point where the Saguna form itself vanishes, and the subtle nature of the Self is revealed. This indicates that the form is a necessary gateway to experiencing the formless.