What was Sai Baba's specific and unusual instruction to Das Ganu regarding his doubt about the Upanishad?

When Das Ganu presented his problem about understanding the Ishavasya Upanishad to Sai Baba, Baba did not provide a direct scholarly explanation. Instead, as recorded in Chapter 20, he gave a peculiar instruction that pointed to an unconventional source for the answer. Baba told him, "The resolution of this doubt of yours will be done by the maidservant at Kaka’s house when you return there." This surprising guidance redirected Das Ganu from a learned Guru to a humble maidservant, setting up the next part of the narrative.