What does Baba teach about the role of greed as an obstacle to spiritual realization, and how did he demonstrate this to a devotee?

Baba taught that greed is a significant barrier to attaining knowledge of Brahman. In Chapter 17, he states that as long as one's mind is obsessed with wealth, children, and cattle, the knowledge of Brahman is unattainable. He memorably demonstrated this to a gentleman by first revealing his omniscience about the money in the man's pocket, and then instructing him to 'Roll up your bundle of Brahman.' Baba explained that greed has an 'eternal enmity with Brahman' and that if even one trace of greed resides in the heart, all spiritual practices are rendered useless, as there can be no peace, satisfaction, or opportunity for true meditation.