What are the main stories and philosophical points introduced in Chapter 31 of the Shri Sai Satcharitra?

Chapter 31 of the Shri Sai Satcharitra begins by briefly recapping past stories, such as those of Megha and a devotee of Saptashringi. The chapter then introduces its primary narrative about a sannyasi from Madras named Vijayananda, who is on a pilgrimage to Mansarovar and stops in Shirdi to see Sai Baba. Interwoven with this story is a significant philosophical discourse on the importance of one's state of mind at the time of death. The text explains that what one meditates on at the end of life determines the soul's subsequent state, which is why the constant practice of remembering God's name and the guidance of a true saint are paramount for attaining liberation.