Harry Potter and the Goblet of Fire
The next few days were some of Harry's worst at Hogwarts. The closest he had ever come to feeling like this had been during those months, in his second year, when a large part of the school had suspected him of attacking his fellow students. But Ron had been on his side then. He thought he could have coped with the rest of the school's behavior if he could just have had Ron back as a friend, but he wasn't going to try and persuade Ron to talk to him if Ron didn't want to. Nonetheless, it was lonely with dislike pouring in on him from all sides. (18.56)
Under the pretext of holding up a measuring cup to see if he'd poured out enough armadillo bile, Harry sneaked a sidelong glance at the pair of them. Karkaroff looked extremely worried, and Snape looked angry.
Karkaroff hovered behind Snape's desk for the rest of the double period. He seemed intent on preventing Snape from slipping away at the end of class. Keen to hear what Karkaroff wanted to say, Harry deliberately knocked over his bottle of armadillo bile with two minutes to go to the bell, which gave him an excuse to duck down behind his cauldron and mop up while the rest of the class moved noisily toward the door.
"What's so urgent?" he heard Snape hiss at Karkaroff.
"This," said Karkaroff, and Harry, peering around the edge of his cauldron, saw Karkaroff pull up the left-hand sleeve of his robe and show Snape something on his inner forearm. (27.67-71)
Ron speared a roast potato on the end of his fork, glaring at it. Then he said, "I hate being poor."
Harry and Hermione looked at each other. Neither of them really knew what to say.
"It's rubbish," said Ron, still glaring down at his potato. "I don't blame Fred and George for trying to make some extra money. Wish I could. Wish I had a niffler." (28.99-101)