I only know this from the .hack games but I assume this is from something else.
assuming you mean the “is this gold/silver/plain [thing] yours”, its a fairy tale. the iteration I learned was about woodcutters. A woodcutter found a lake and either lost or threw his axe in. the spirit offered a golden Axe, and he lied and said the golden axe was his. the spirit gave it to him anyway, but when he tried to use it, it turned aside and instead of chopping trees, he accidentally chopped his legs off and died. another man tried the same thing, but instead said the silver axe was his, but when he tried chopping wood, it cut his arms off. a third man lost his axe, answered honestly that the plain iron axe was his, and got all three axes in return. something something be honest and/or don’t accept strange axes from watery tarts.
Yeah I guess it’s Aesop’s fables where it came from originally as other posted said. Even referenced in the .hack wiki for it: https://dothack.fandom.com/wiki/Spring_of_Myst
Just a weird fable for the moral and not seen it outside of that I knew it had to come from somewhere, Greek myth makes sense cuz the gods are fucking weird.



