Can you tell me about the problem Das Ganu had with the Ishavasya Upanishad and what Sai Baba told him to do about it?

In Chapter 20, we learn that Das Ganu was authoring a commentary called the "Ishavasya-Bhavartha-Bodhini" to make the deep meanings of the Ishavasya Upanishad accessible in simple Prakrit language. However, he felt that his word-for-word translation was failing to capture the Upanishad's internal secret, and his mind found no joy in the work. When he took this doubt to Sai Baba in Shirdi, Baba gave him a very unusual instruction. Instead of explaining the scripture himself, Baba told Das Ganu, "The resolution of this doubt of yours will be done by the maidservant at Kaka’s house when you return there."