What does Chapter 11 say about why it's important to worship a Guru in a physical, manifest form?

According to the teachings in Chapter 11 of the Shri Sai Satcharitra, worshipping a Guru in a physical or manifest (Saguna) form is essential for a devotee who themselves has a physical body. The text explains this as a determination of the scriptures, stating, "for the formless, the formless is suitable." It emphasizes that devotion cannot truly manifest without meditating on the Saguna form. This devotion is crucial because, as Chapter 11 describes, it is what causes the "bud of the mind" to open and bloom. Without this blooming, there can be no spiritual fragrance or nectar, meaning no true spiritual progress or bliss can be experienced by the devotee.