Can you tell me about the story of Sai Baba's visit to Delhi mentioned in the Satcharitra? I'm trying to find that specific incident.

Based on the provided source material, there is no mention of Sai Baba visiting Delhi. Chapter 36 discusses the greatness of Sai's stories and his divine nature, describing him as having no specific name or village but being worshipped by people from "the country and abroad." The chapter's narrative then transitions to a new story, explicitly stating that "Two gentlemen from Goa came for Sai’s darshan." Therefore, the reference you are seeking about a visit to Delhi is not found within this portion of the text, which instead points to visitors from Goa.