How does Chapter 16 compare the generosity of a Guru to that of a wish-fulfilling gem, Chintamani?

In Chapter 16, a powerful comparison is made to highlight the unparalleled generosity of a Guru. The text explains that a Chintamani, or a wish-fulfilling gem, is limited in its power because it can only give a person what they think of or desire. In contrast, the Guru's gift is infinitely greater. As the chapter wonderfully puts it, the Guru gives the 'Unthinkable Object,' which is Brahman, to His devotee. This illustrates that the Guru doesn't just fulfill worldly desires but bestows the ultimate, transcendental reality that is beyond the disciple's own conception or imagination, making the Guru the most generous giver in all three worlds.