What was the specific vow Balasaheb Deo made about reading the Dnyaneshwari, and what drove him to that point?

Balasaheb Deo was driven to his vow by his persistent failure to read the Dnyaneshwari regularly. Chapter 41 explains that despite a strong desire, some obstacle would always prevent his practice. He became distressed after realizing he could not even succeed in his minimal resolution to read just five verses daily with regularity. This led him to make a specific and firm resolve based on faith at Sai's feet. He vowed, "Only when Sai Himself gives love And says 'Read,' then will I start without any confusion." He decided to wait for a direct order from his Guru before attempting to read the scripture again.