What critical travel advice did Hemantpant receive on his way to Shirdi, and why was it so important?

During his journey, Hemantpant encountered a potential disruption that was averted by timely advice. According to Chapter 2, after leaving for Shirdi, he took a local train from Bandra with a ticket only to Dadar, intending to catch the Manmad mail train from there. However, a Muslim man who boarded the same compartment advised him not to get down at Dadar, as the mail train did not stop there. He suggested going to Bori Bunder (CST) instead. This information was crucial because, had he not received it, he would have missed the mail train, and his fickle mind might have created further doubts about the journey.