Why does Chapter 52 emphasize meditating on Sai's physical form (Saguna) as a step towards understanding the formless (Nirguna)?

Chapter 52 explains the importance of meditating on Sai's physical, or Saguna, form as a crucial step in spiritual realization. The text posits that the ultimate reality, the Parabrahma, which is without attributes (Nirguna), is extremely difficult to comprehend directly. Therefore, it is necessary to first approach the divine through its manifested form. According to Chapter 52, "Without entering the Saguna form, the light of the Self cannot be known." By meditating immensely on Sai's physical form, the devotee's mind becomes focused and purified. This practice eventually leads to a state where the subtle nature of the formless Self manifests as the attachment to the physical form naturally vanishes, guiding the seeker from the known to the unknown.