Why did Maharaj suddenly start demanding Dakshina from Kashiram, and what was the ultimate lesson?

Maharaj's behavior regarding Dakshina was a specific spiritual lesson for Kashiram. Initially, Kashiram felt pride in his ability to give, and tears would come to his eyes if Maharaj did not accept his offering. Chapter 0 explains that Maharaj recognized this pride as an obstacle to Kashiram's spiritual progress. To remove this pride, Maharaj began a 'barrage of demanding Dakshina' until Kashiram's money was finished and he had to borrow. The whole Leela was designed to make Kashiram realize he did not truly have the 'power to give.' Once he learned this lesson and his pride vanished, his financial condition began to improve again.