How does the text describe the internal transformation of devotees who initially had doubts about Sai Baba's faith or caste?

The source text provides powerful examples of internal transformation rooted in Sai Baba's divine manifestations. Chapter 12 details the story of Mule Shastri, a high-caste Brahmin who was initially doubtful. Upon seeing his own Guru in Baba, his 'pride of high caste broke,' the 'thought of touchable and untouchable vanished,' and his 'wavering attitude vanished.' He became filled with love and devotion. Similarly, a doctor, also a Brahmin, was firm in his resolution not to bow to a 'Muslim.' But when he saw the form of Lord Ram in Baba's place, he prostrated immediately. This experience caused him to conclude that saints like Baba are 'yogically-perfect incarnations,' not defined by caste or creed. As Chapter 12 describes, these direct experiences dissolved the devotees' doubts and replaced them with profound faith.