What are the main narratives and themes introduced in Chapter 31 of the Shri Sai Satcharitra?

Chapter 31 of the Shri Sai Satcharitra begins by briefly recapping several past stories, including those of the Saptashringi devotee, Madhavrao's fulfilled vow, and the liberation of a tiger. The main narrative then focuses on a sannyasi from Madras named Vijayananda who is on a pilgrimage to Mansarovar. Hearing of Sai Baba's fame, he stops in Shirdi. The chapter also introduces a key philosophical theme: the importance of one's state of mind at the time of death, explaining that this determines the soul's next birth. This sets the stage for the sannyasi's encounter with Baba and the lesson he is to learn.