Chapter 52 discusses meditating on Sai's physical form. How does this 'Saguna' worship lead to understanding the formless 'Nirguna' reality?

According to Chapter 52, meditating on Sai's physical form (Saguna) is a crucial step toward realizing the formless divine (Nirguna). The text explains that without first engaging with the Saguna form, the light of the Self cannot be known because the attribute-less Parabrahma is otherwise entirely difficult to understand. By meditating immensely on Sai's physical form, the subtle nature of the true Self will manifest as the attachment to the physical form eventually vanishes. In this way, Sai mysteriously led His devotees toward the supreme goal, using His form to help them transcend it.