What specific 'incomparable miracles' or 'wonderful plays (Leelas)' of any Guru are described in the preface?

The preface provided in Chapter 0 defines a Guru's biography as a reliable book that describes the Guru's incarnation, childhood, wonderful plays (Leelas), and incomparable miracles. However, while the text defines the contents of such a biography, it does not actually narrate or provide any specific examples of these miracles or Leelas for any Guru. The focus of these excerpts is on the nature and purpose of biographical texts, not on the specific events within them.