Rabbit introduces the accusations by saying:
The Queen of Hearts, she made some tarts,
All on a summer day:
The Knave of Hearts, he stole those tarts,
And took them quite away!
Then he recites this poem:
They told me you had been to her,
And mentioned me to him:
She gave me a good character,
But said I could not swim.
He sent them word I had not gone
(We know it to be true):
If she should push the matter on,
What would become of you?
I gave her one, they gave him two,
You gave us three or more;
They all returned from him to you,
Though they were mine before.
If I or she should chance to be
Involved in this affair,
He trusts to you to set them free,
Exactly as we were.
My notion was that you had been
(Before she had this fit)
An obstacle that came between
Him, and ourselves, and it,
Don’t let him know she liked them best,
For this must ever be
A secret, kept from all the rest,
Between yourself and me.
The White Rabbit recited it at the Knaves trial in Alice’s Adventure in Wonderland.
Apparently it is evidence that he stole the Queens tarts!