Can you explain the deeper, symbolic meaning behind Baba grinding wheat and throwing away the flour?

The incident of Sai Baba grinding wheat holds a profound symbolic meaning, as detailed in Chapter 1. The act was not for sustenance but was a divine play to eradicate a cholera epidemic from the village. The text explicitly states that the wheat itself represented the cholera epidemic. By putting the grains through the mill, Baba was metaphorically grinding the disease into dust, destroying its power. His subsequent instruction to have the flour thrown on the village boundary symbolized the complete expulsion of the sickness from the community. This event, where the cause (grinding) and effect (curing disease) seemed unrelated, demonstrated Baba's inconceivable power and unique methods for protecting his devotees.