What specific problem did Das Ganu face while writing his commentary, and what was Sai Baba's advice to him in Chapter 20?

In Chapter 20, Das Ganu was working on a book called "Ishavasya-Bhavartha-Bodhini," a commentary meant to explain the Ishavasya Upanishad in simple language. Although he had translated the text word for word, he felt he could not grasp its true inner meaning, and his work brought him no joy. This is the doubt he brought to Sai Baba in Shirdi. Instead of providing a direct explanation, Baba gave him peculiar instructions. As the chapter recounts, 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 demonstrated Baba's unconventional method of teaching through life experiences.