Yep to the advice in this thread.
Is this open for debate for your character? Could they be convinced in any way about this?
(Deeper thought: in what ways is your character open to doing things that aren’t in their best interest? It makes good stories, such as most of Shakespeare’s stories…)
No? Then there can be no argument. Better wrestle, fight, or sneak it away from them later.
Yes? Do you want something in return? If not then it’s a Social roll vs. Will. (“No, I just want to keep the Sword, you got nothing I really want.”) If so, then it’s a DoW. (“I want to keep the Sword, and we paid you so you better show us the way back out.”)
Most of the time, unless you’re explicitly aiming to impress someone, a social roll doesn’t have to make anyone LIKE the fact they just got hustled out of (or into) something. Think of family who gets on your nerves, but you keep helping out.
But either way, once the dice get rolled, that’s what happens. Those are the consequences. If someone’s asking something ridiculous, you say, “No, not going to test on that”. Savvy players will start figuring out sometimes the key is to ask for things more reasonable, or even things the person will agree with without a test. “Let me use the Sword to protect you from the Elf”… thing is, the other player knows if that’s your stake, you WILL have to abide by it, so… then it becomes a game of measuring your odds.
A fun thing to do for characters you build is give them an Instinct to Always trust… or Never trust… a specific PC, or a type of person. “Always listen to the Councilor’s advice”, etc. It’s a great way to tell the GM exactly how you’d like to get into trouble AND mine a lot of Artha in the process.