After repeatedly failing to read the Dnyaneshwari, what specific vow did Balasaheb Deo make?

Feeling distressed by his inability to maintain a regular practice of reading the Dnyaneshwari, Balasaheb Deo made a firm and faithful resolution. Chapter 41 explains that he decided to surrender the issue entirely to his Guru. He vowed that he would only commence reading the sacred text when Sai Baba Himself gave him a direct order and instilled in him the love for it. He sat with this firm resolve, placing his faith at Sai's feet and waiting for a clear signal before he would attempt to read the Dnyaneshwari again, resolving to not force it on his own.