Can you explain the story of Baba grinding wheat and what it actually meant?

In a curious event detailed in Chapter 1, Sai Baba unexpectedly began grinding wheat in the mosque, an act that puzzled onlookers as he was a detached person with no possessions. Four village women, seeing this, rushed in and took over the task, singing his praises. After they finished, they greedily assumed the flour was for them and prepared to divide it. Baba, however, became angry and ordered them to take the flour and throw it on the village boundary. The true purpose was later revealed: the wheat was not grain but a symbol for the cholera epidemic ravaging the village. By grinding the wheat and having the 'flour' cast out, Baba effectively drove the disease away, demonstrating his unique and powerful methods for protecting his devotees.