What specific event described in the first chapter inspired Hemadpant to write the Sai Satcharitra?

The primary inspiration for Hemadpant to write the Sai Satcharitra was witnessing Sai Baba grind wheat and later understanding its true purpose. Chapter 1 explains that Hemadpant was filled with 'great wonder' watching the scene unfold. However, the decisive moment came when he learned the connection between Baba's grinding and the subsequent end of the cholera epidemic. Seeing this 'inconceivable cause and effect' and questioning the relationship between wheat and disease sparked a profound realization. This event caused love to surge in his heart and made him feel compelled to 'sing the sweet story of Baba' and compose the book.