What difficulty did Das Ganu face with his writing project, and what was Sai Baba's unusual advice to him?

Das Ganu was working on a commentary called "Ishavasya-Bhavartha-Bodhini," trying to explain the profound Ishavasya Upanishad in simple Prakrit for those unfamiliar with Sanskrit. According to Chapter 20, while he managed a word-for-word translation, he struggled to grasp its "internal secret" and deep meaning, which left him unsatisfied. When he brought this doubt to Sai Baba in Shirdi, Baba gave him a surprising instruction. Instead of explaining it himself, Baba told him, "The resolution of this doubt of yours will be done by the maidservant at Kaka’s house When you return there," demonstrating Baba's unique teaching methods.