Describe Dev's moment of realization after receiving Jog's letter and why he felt so ashamed.

Upon reading Jog's letter explaining Baba's side of the story, Dev was overcome with a surge of love and profound regret. Chapter 40 narrates that his eyes overflowed with tears as he exclaimed, 'Shame, shame! I blamed Sai in vain!' He felt dejected, blaming his own 'pride of knowledge' for his failure to recognize Baba. Dev reasoned that his delusion was understandable because the Sanyasi had first appeared to him for a different purpose—collecting funds for cow protection—before the invitation for the Udyapan was even sent to Sai. This initial context prevented him from connecting the Sanyasi's later appearance for the meal with Baba's divine promise.