How does Chapter 52 explain the philosophical relationship between the Saguna (with form) and Nirguna (formless) aspects of divinity in the context of devotion to Sai?

Chapter 52 presents a profound teaching on the path to understanding the formless Self. It states that meditating immensely on Sai's physical form (Saguna) is the necessary first step. This practice allows the subtle nature of the Self to manifest as the Saguna form eventually vanishes. The text explicitly says that without entering the Saguna form, the light of the Self cannot be known because the Parabrahma, which is without attributes (Nirguna), is entirely difficult to grasp directly. Sai used His own physical form to lead devotees toward this supreme goal.