What are the key teachings presented in Chapter 9 of the Sai Satcharitra regarding seeking Baba's permission and his practice of begging?

Chapter 9 of the Sai Satcharitra imparts several important teachings. A central theme is the absolute necessity of obtaining Sai Baba's permission before leaving Shirdi, as the text states that departing without his consent invites obstacles. Conversely, once permission is granted, one should not delay their departure. The chapter also explains that Baba's lifelong habit of begging for food was not for himself, but for the welfare of his devotees, specifically for the removal of sins like the 'Panchasuna'. Furthermore, this chapter reinforces the idea that Sai is omnipresent, pervading everything, and resides in all beings.