Chapter 52 mentions meditating on Sai's physical form. Why is this 'Saguna' worship considered important, and what does it lead to?

According to Chapter 52, meditating immensely on Sai's physical form, or Saguna worship, is a crucial step on the spiritual path. The chapter explains that the ultimate reality, the Parabrahma, which is without attributes or form (Nirguna), is entirely difficult to understand directly. Therefore, the Saguna form provides an accessible entry point. The text states that without first entering the Saguna form, the light of the Self cannot be known. This practice of meditating on the physical form eventually leads to the manifestation of the subtle nature of the Self as the Saguna form itself vanishes from the devotee's focus, guiding them mysteriously toward the supreme goal of liberation.