What are the core teachings and main themes presented in the beginning of Chapter 9 of the Sai Satcharitra?

Chapter 9 of the Sai Satcharitra opens by introducing several key themes. It highlights the trouble and exhaustion faced by devotees who chose to leave Shirdi without Sai Baba's permission. The text also explains the spiritual significance of Baba's lifelong habit of begging for food, stating it was done for the welfare of his devotees and for the removal of sins like the 'Panchasuna'. Furthermore, a profound spiritual concept is presented: that Sai is all-pervading, present in all creation from Brahma to the smallest inanimate object, and that through his grace, he helps us realize that God resides in all beings, as described in the chapter's introductory verses.