I read that Das Ganu had a problem while writing a commentary. What was the issue and what did Sai Baba tell him?

Chapter 20 recounts the story of Das Ganu, who was writing a commentary in simple Prakrit language on the Ishavasya Upanishad, titled 'Ishavasya-Bhavartha-Bodhini.' His goal was to make the scripture accessible to those unfamiliar with Sanskrit. Although he managed a word-for-word translation, he struggled to grasp the deep, internal meaning of the Upanishad, and his mind found no joy in the work. When he took this doubt to Sai Baba in Shirdi, Baba gave him a cryptic instruction. As this chapter explains, Baba told him, "The resolution of this doubt of yours will be done by the maidservant at Kaka’s house When you return there."