Harry Potter and the Prisoner of Azkaban
"He bit Goyle for us once!" Ron said miserably. "Remember, Harry?"
"Yeah, that's true." said Harry.
"His finest hour," said Fred, unable to keep a straight face. "Let the scar on Goyle's finger stand as a lasting tribute to his memory." (13.1.9-11)
"I met him!" growled Hagrid. "I musta bin the last ter see him before he killed all those people! It was me what rescued Harry from Lily an' James's house after they was killed! [...] an' Sirius Black turns up, on that flyin' motorbike he used ter ride. Never occurred to me what he was doin' there. I didn' know he'd been Lily an' James's Secret-Keeper." (10.3.160)
"A thought that still haunts me," said Lupin heavily. "And there were near misses, many of them. We laughed about them afterwards. We were young, thoughtless – carried away with our own cleverness." (18.50)