Can you summarize the key events and teachings presented in Chapter 5 of the Sai Satcharitra?

Chapter 5 of the Sai Satcharitra primarily focuses on the theme of humility and the nature of a true Guru. The chapter introduces Devidas, a learned individual who resided in Shirdi before Baba's return. It narrates an incident where Devidas defeated a Fakir in a scriptural debate, a Fakir who wrongly considered himself Sai's Guru. As the chapter explains, this Fakir later repented and bowed to Sainath. This story serves as a backdrop for discussing Sai Baba's profound humility and his own practice of the principle, "His Guruship to him, and my discipleship to me." The text also emphasizes the importance of acting without pride and provides a brief preview of future topics, such as the history of the mosque.