What was a quote from where Bilbo stole the cup?

The quote you're likely thinking of is from The Hobbit, where Bilbo Baggins steals the cup from the goblin king, Gollum:

>"“Precious, precious,” he hissed. "My precious. It’s mine!”

>"‘Yes, precious, it is yours, isn’t it?’ said Bilbo, looking at it in astonishment. ‘But if it’s yours, you must be able to find it in the dark. Just try and find it, now, precious, just try and find it! I dare you!’"

This happens after Bilbo defeats Gollum in a riddle game and escapes from the goblin caves, taking the cup with him.

Let me know if you'd like to know more about this scene or any other part of the story!