How does the provided text describe the consequences for a disciple who doubts their Guru's Prasad?

The text from Chapter 38 offers a very strong warning about this. It states that if a disciple entertains a doubt about the Prasad given by the Guru, specifically questioning what is edible or inedible, that disciple commits 'spiritual suicide' and heads towards a downfall. This powerful statement emphasizes the necessity of absolute faith in the Guru. To help devotees grasp this vital principle, Baba would sometimes use jokes, humor, and practical experiences to make his point, rather than just direct instruction.