How did Sai Baba propose to resolve the complex scriptural doubt that Das Ganu presented to him in Chapter 20?

When Das Ganu approached Sai Baba in Shirdi with a doubt about the deep meaning of the Ishavasya Upanishad, Baba's response was quite unusual. Instead of providing a direct philosophical explanation, Sai Baba gave him a surprising instruction. As narrated in Chapter 20, 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 set the stage for a lesson where Baba would demonstrate that spiritual knowledge can come from the most unexpected sources, promising that the meaning of the scripture would be explained through a humble maidservant.