What vow did a man named Cholkar make to Sai Baba, and what was his reason for doing so?

Cholkar, a man from a poor household, faced a critical situation where his livelihood depended on passing an examination to make his job permanent. As described in Chapter 15, he made a sincere vow to Sai Baba. He promised that if he passed the exam by Baba's grace, he would travel to Shirdi, present himself at Baba's feet, and distribute sugar candy (khadisakhar) in Baba's name. This vow was a firm resolve born from desperation, as failing the exam meant his daily bread and his entire candidacy were at stake.