Sloppy Labwork says " Play: Archive a card. Discard a card."
For archiving a card, the rulebook clearly states "If the ability instructing a player to archive a card does not specify where the card is archived from, the archived card comes from that player's hand."
But I am not finding a similar statement in the rulebook related to discarding cards.
I am assuming that the discarded card also has to come from my hand, not my opponent's hand. But could someone please direct me to the specific rule that states this, similar to the rules for archiving a card? (Not an interpretation or an explanation. I get it, and I 100% agree with you. I'm just looking for an actual rule stated in the rulebook somewhere, please.)