Could someone clarify how charity works

[Andrew Hackard]

Originally Posted by hailoulenglo

Where in the rule book does it specify that players can give their cards away to a certain individual in order to stop another player from winning, especially during combat?

Nowhere, because they can't. (Unless they are trading Item cards that they already have in play.) Charity happens at a well-defined moment on each player's turn and is the ONLY time cards may be passed directly from the hand to another player without a specific direction saying so on a card, such as on a Curse.