What spiritual principle does the text teach about accepting Prasad from a Guru without question?

Chapter 38 explains a profound spiritual principle regarding the acceptance of a Guru's Prasad. It posits that if a disciple entertains a doubt about whether the Prasad is edible or inedible, that disciple suffers "spiritual suicide" and heads towards a downfall. The text suggests that true devotion requires absolute faith in the Guru's actions. This principle is further highlighted by the idea that the ultimate Dakshina (offering) is not material goods but the act of carrying out the Guru's order. Baba would sometimes use jokes or seemingly contradictory commands to help his devotees experience and understand this deep principle for their own benefit.