What specific promise did Cholkar make to Sai Baba, and what were the reasons for his delay in keeping it?

Cholkar's vow to Sai Baba was very specific. As described in Chapter 15, he was facing an important examination for his job, and he promised that if he passed by Baba's grace, he would present himself at Baba's feet and distribute sugar candy (khadisakhar). He successfully passed the exam, but his journey to fulfill the vow was delayed. The source material explains that he came from a "poor household" and that for a worldly man, crossing the "threshold-ghat" of home expenses is very difficult. He felt he could not go to Shirdi empty-handed and had to continually postpone the trip, during which time he abstained from sugar as a personal sacrifice.