Chapter 52 discusses the importance of Sai's physical form. Can you explain the relationship between meditating on the Saguna form and understanding the formless Self as described here?

As detailed in Chapter 52, meditating on Sai's physical, or Saguna, form is presented as an essential step toward realizing the formless Self. The text explains that the subtle nature of the Self will manifest as the Saguna form vanishes from the mind during deep meditation. It posits that without first approaching the Saguna, the light of the Self cannot be known because the Parabrahma, which is without attributes, is entirely difficult to understand directly. Therefore, Baba showed His own feet and form, using the power of love to make His devotees liberated while still in the body, mysteriously leading them toward the supreme goal of understanding the formless Absolute.