Based on the incident with Dada Kelkar, what is the 'real Dakshina' to a Guru?

The narrative in Chapter 38 uses the story of Dada Kelkar to illustrate a deeper spiritual principle about offerings. The text explains that 'Dakshina' is not limited to offerings of wealth, grain, or clothes. Instead, it posits that 'the performance of the Guru's order—pleasing the Guru—is the real Dakshina.' Dada Kelkar, a devout Brahmin, being asked to fetch meat on a fasting day serves as a prime example. His unwavering readiness to fulfill this unusual and challenging command, despite his personal background and religious customs, is presented as the ultimate form of devotion and the truest offering to a Guru.