Can you explain the story about Baba asking Dada Kelkar to buy meat and what it means?

Chapter 38 recounts a profound incident involving Ganesh Damodar Kelkar, an elderly and devout Brahmin known as Dada. On Ekadashi, a Hindu fasting day, Baba gave Dada money and ordered him to personally go and fetch meat. This command was a novelty and a test for a Brahmin who was perfect in his religious conduct. The story illustrates a key spiritual principle about the Guru-disciple relationship. The text explains that the truest offering, or "Dakshina," to a Guru is not wealth or material items, but the complete and faithful execution of the Guru's command. This act of obedience, even when it challenges one's own habits and thoughts, is what truly pleases the Guru.