What specific event motivated Hemadpant to write the Shri Sai Satcharitra?

The primary motivation for Hemadpant to write the Shri Sai Satcharitra was witnessing Sai Baba's seemingly inexplicable act of grinding wheat. In Chapter 1, Hemadpant describes his own wonder and confusion seeing a detached saint performing such a domestic chore. His bewilderment grew when Baba had the resulting flour thrown away. The profoundness of the act was revealed when he learned that Baba had not ground wheat, but had symbolically ground the cholera epidemic and cast it out of the village. The narrator states, "Seeing the inconceivable cause and effect, I felt like writing a book." This powerful display of Baba's divine play and the deep, hidden connection between cause and effect sparked a surge of love in Hemadpant's heart, compelling him to document and sing the sweet stories of Sai Baba.