The source material alludes to Sai Baba's omniscience. Can you detail the connection between his teachings and the city of Delhi as referenced in Chapter 18?

The provided source material from Chapter 18 does not contain any references to the city of Delhi. The chapter primarily focuses on the spiritual practices Sai Baba encouraged in Shirdi, such as the daily reading of sacred texts like the Nath Bhagawat and Jnaneshwari in Sathe's Wada. It describes how Baba would send devotees to listen to these readings and how he managed his devotees whether they were near or in a distant land, but no connection to Delhi or events there is mentioned in these passages.