[Goku powers up to fight Vegeta
No, Goku! You mustn't! If you fight him here, you would be doing precisely what Babidi wishes. Every injury that Vegeta causes would be sent back to the ship and Buu will be revived!
Tell me, Vegeta. With that stamp on your head, I know Babidi's been giving you orders. Is this one of them? Are you trying to fight me because of him, or is this the same old story between you and me? Which one?
Does it really matter?
Not to you, Gohan. But to a warrior, it matters ...