ATUALIZAÇÃO: Rowling aparentemente acabou de abordar isso no Twitter.

Good story, but it isn't true! @stephenfry wasn't condescending, he was completely lovely, and that phrase isn't in 4 books! #factsmatter

_Twitter

Resposta original abaixo.

Quase, mas não exatamente

Livro 4: "Harry o embolsou"

He pulled Sirius’s reply off Pigwidgeon’s leg, Harry pocketed it, and they hurried back to Gryffindor Tower to read it. (Chapter 23)

Livro 5: "embolsado"

Each wore an expression of utmost contempt, yet the unexpected entrance of so many witnesses seemed to have brought them to their senses. Snape pocketed his wand(, turned on his heel)¹ and swept back across the kitchen, passing the Weasleys without comment. At the door he looked back. (Chapter 24)

Livro 6: "embolsou"

Not long after this, Hagrid became tearful again and pressed the whole unicorn tail upon Slughorn, who pocketed it with cries of, “To friendship! To generosity! To ten Galleons a hair!” (chapter 22)

Livro 7: Não embolsando: - (

Nota: Enquanto a pergunta estava apenas perguntando sobre a precisão da parte final, deve ser notado que a frase Harry pocket it não é encontrada em lugar nenhum O Prisioneiro de Azkaban , nem para essa matéria é a palavra embolsada .

Bônus: A pedido do OP, estou adicionando uma lista de todos os lugares em que a palavra embolsada pode ser encontrada na Canon Harry Potter.

Harry embolsou-o - 4 vezes

"Better get the cloak," Ron muttered, as Lee Jordan finally left, stretching and yawning. Harry ran upstairs to their dark dormitory. He putted out the cloak and then his eyes fell on the flute Hagrid had given him for Christmas. He pocketed it to use on Fluffy -- he didn't feel much like singing. (PS16)

"Well, it's not much use to you," said Ron. He dropped his voice. "Fifty points if you can get it through Myrtle's nose."
Harry, however, pocketed it. (CS13)

Mr. Diggory handed Harry his wand and Harry pocketed it. (GF9)

He pulled Sirius’s reply off Pigwidgeon’s leg, Harry pocketed it, and they hurried back to Gryffindor Tower to read it. (GF23)

Crachá-lo - 1 hora

Not long after this, Hagrid became tearful again and pressed the whole unicorn tail upon Slughorn, who pocketed it with cries of, “To friendship! To generosity! To ten Galleons a hair!” (HBP22)

Embolsado - 4 vezes

"We're going to talk now," said Riddle, still smiling broadly, and he pocketed Harry's wand. (CS17)

'Right-o,' Fred said brightly, spraying the Doxy quickly in the face so that it fainted, but the moment Mrs. Weasley's back was turned he pocketed it with a wink. (OP6)

Each wore an expression of utmost contempt, yet the unexpected entrance of so many witnesses seemed to have brought them to their senses. Snape pocketed his wand(, turned on his heel)¹ and swept back across the kitchen, passing the Weasleys without comment. At the door he looked back. (OP24)

He looked at Ron. "You saved everything because you felt lucky. You did it all yourself."
He pocketed the potion again. (HBP14)

Then he returned to the Gaunt hovel, performed the complex bit of magic that would implant a false memory in his uncle's mind, laid Morfin's wand beside its unconscious owner, pocketed the ancient ring he wore, and departed." (HBP17)

Por livro:
Pedra Filosofal - 1 ocorrência, Ele [harry] embolsou
Câmara dos Segredos - 2 ocorrências, incluindo Harry (no entanto), embolsadas.
Prisioneiro de Azkaban - Nenhuma ocorrência - Cálice de Fogo - 2 ocorrências, as quais são Harry embolsadas.
Ordem da Fênix - 2 ocorrências, incluindo Ele [Harry] embolsou.
Príncipe Mestiço - 3 ocorrências, incluindo embolsou
Relíquias da Morte - Nenhuma Ocorrência - Trabalhos complementares - sem ocorrências
Entrevistas - sem ocorrências
Pottermore - sem ocorrências

¹ ", ligado no calcanhar" foi removido em edições posteriores.