Why would a desireless saint like Sai Baba ask for money? What was the purpose of Dakshina?

The source text from Chapter 14 addresses the apparent contradiction of a desireless saint asking for money. The essence of this practice was that, under the pretext of Dakshina, Baba was teaching His devotees to choose humility. He would even command a great millionaire to go to a poor person's house to beg for the offering. This act was not for accumulating wealth, as pebbles and diamonds were of the same value to Him, but rather a method for fostering humility and stripping away the ego of His followers.