Who were the three uninvited guests at Dev's ceremony, and how did he treat them at the time?

The three uninvited guests were Sai Baba in the disguise of a Sanyasi, along with two unidentified companions He brought with Him. Despite their uninvited arrival, Dev treated them with the full respect and etiquette due to guests. The account in Chapter 40 states that Dev served them a satisfying meal and performed all the traditional rituals, including Uttaraposhan, Shuddhachaman, and the giving of mouth fresheners. He also offered them sandalwood paste, flowers, betel leaves, and perfume with 'great respect and joy.' However, a 'veil of Maya' prevented him from recognizing Baba. He considered the Sanyasi merely 'some guest who has come to get a meal,' and he remained doubtful and unaware of the profound spiritual event unfolding before him.