What are the main teachings presented in Chapter 49 of the Sai Satcharitra regarding the nature of the Sadguru and devotion?

Chapter 49 of the Sai Satcharitra teaches that the Sadguru's greatness is unfathomable, to the point where even the Vedas grew weary of praising Him and silence is considered the truest form of praise. However, the author is compelled to share Sai's leelas. The chapter emphasizes that a true devotee is one who is completely devoid of ego and body-pride. It also states that meditating on one's Guru is the greatest spiritual practice, surpassing pilgrimages, vows, and even singing Hari's name. As highlighted throughout this chapter, love for the Guru's feet is described as the only true wealth for a devotee.