What's the story about Sai Baba grinding wheat in the mosque, and what did he end up doing with the flour?

In a fascinating incident described in Chapter 1, Sai Baba unexpectedly began grinding wheat in the mosque. While people watched in wonder, four women from the village took over the task from him. After they finished, they expected Baba to share the flour with them since he lived on alms and had no family. However, Baba became angry at their greedy thoughts and commanded them to take the flour and throw it on the village boundary. It was later revealed that the wheat was not just wheat; it was a symbolic representation of the cholera epidemic. By grinding it and having it cast out, Baba miraculously drove the disease away from the village.