What problem did Das Ganu face while writing his commentary on the Ishavasya Upanishad, and what was Sai Baba's response in Chapter 20?

According to the narrative in Chapter 20, Das Ganu undertook the task of creating a commentary called the 'Ishavasya-Bhavartha-Bodhini' to explain the Upanishad in simple language. Although he translated it word for word, he felt his work lacked the true internal secret, and his mind found no joy. Unable to grasp the essence, he took his doubt to Sai Baba in Shirdi. Baba's response, as detailed in this chapter, was unconventional. He told Das Ganu, "The resolution of this doubt of yours will be done by the maidservant at Kaka’s house When you return there," setting up the continuation of the story and demonstrating his unique method of teaching.