Describe the devotion of Dadasaheb Khaparde and his wife as depicted in the source material.

According to Chapter 27, Dadasaheb Khaparde, a learned and prominent public figure, demonstrated immense devotion by staying in Shirdi with his family for an extended period. Despite his oratory skills, he observed a vow of silence before Sai, showing profound humility. His family shared this deep faith. Mrs. Khaparde, in particular, was extremely faithful, with ultimate love for Sai's feet. She would personally bring food offerings (naivedya) to the Masjid every day and would fast until Baba had accepted and eaten the food. This act of firm faith was so significant that Baba, the lover of devotees, took notice and showed her the 'bright path'.