How does the author transition from the previous chapter and set the stage for the narrative within Chapter 18?

The author provides a clear transition in Chapter 18 by first summarizing the theme of the preceding chapter. He mentions that the previous story described how 'the cover of greed acts as an obstacle for a seeker of Brahman.' Having established that context, he then pivots to the current chapter's content, promising to narrate a 'sweet tale' about the grace bestowed upon him personally. As detailed in Chapter 18, he asks the listeners to hear it with a calm mind for their own benefit, setting an atmosphere of respectful attentiveness for the story that is to follow.