What was the specific vow Cholkar made to Sai Baba, and why was there a delay in its fulfillment?

According to Chapter 15, Cholkar's specific vow to Sai Baba was made out of desperation for his livelihood. He was a poor man who needed to pass an examination to make his job salary permanent. He prayed to Baba with a firm resolve, promising that if he passed by Baba's grace, he would "present myself at your feet And distribute sugar candy (khadisakhar) in your name." Although his wish was granted, there was a delay in fulfilling this vow. The text attributes this delay to the difficulty of crossing the "threshold-ghat," a metaphor for the immense challenge of managing household expenses for a worldly man. He simply did not have the means to make the journey to Shirdi immediately, so the days had to be pushed from one to the next.