Can you explain the incident with Dada Kelkar and the request to buy meat on Ekadashi?

Chapter 38 recounts a significant story involving Dada Kelkar, a devout Brahmin elder. On Ekadashi, a day of fasting, Sai Baba specifically ordered Dada Kelkar to go and purchase meat, providing him with the money for it. This unusual command was a profound test of faith and obedience. As the chapter explains, the true offering, or Dakshina, to a Guru is not just wealth but the complete performance of the Guru's order. This incident was meant to teach the principle that a disciple should not entertain doubts about a Guru's command, as doing so can lead to a spiritual downfall.