How did Dev react when he finally found out that Sai Baba had actually attended his Udyapan ceremony in disguise?

Upon learning the truth from a letter sent by Jog, Dev was overwhelmed with a mix of emotions. According to Chapter 40, his eyes overflowed with a surge of love, and he felt deep remorse for his lack of faith. He exclaimed, "Shame, shame! I blamed Sai in vain!" and felt very dejected in his mind. Dev recognized that the pride of his own knowledge had blinded him to Baba's presence. He lamented how he failed to guess that the Sanyasi was Baba, attributing his delusion to the fact that the Sanyasi had first appeared for a different reason before the invitation to the Udyapan was even extended.