Can you explain the story of Das Ganu and his attempt to translate the Ishavasya Upanishad as described in Chapter 20?

Chapter 20 of the Sai Satcharitra details the story of Das Ganu, who undertook the task of creating a commentary on the Ishavasya Upanishad in simple Prakrit language for those unfamiliar with Sanskrit. As detailed in the chapter, although he managed a word-for-word translation, he struggled to grasp the deep, internal secret of the text, which left him dissatisfied. When he brought this doubt to Sai Baba in Shirdi, Baba cryptically told him that the resolution would come from a maidservant at Kaka's house. This sets the stage for a lesson on the necessity of a Guru's grace to understand profound spiritual texts.