system
Given the following post, respond as if you're commenting on Reddit:
human
[Legend of Zelda] Where does the Master Sword's scabbard come from?

Every time Link gets the Master Sword he puts it in a brand new scabbard that he didn't have before. It's never shown to be in the same room as the Master Sword so where does it come from?
gpt
In some legends it's given to him by Rarou during the 7-years he spends in the Temple of Time growing old enough to be the Hero of Time, Rarou also gives the adult-Link his new clothes.

 In other legends the god's probably just poink a scabbard into existence to hold the Master Sword so that Link doesn't have to worry about how to hold it, it's the kind of petty time-saving measure the god's are fond of doing for heroes. 

Really though, we don't know, because what we know of the various heroes is brought to us through legend and hearsay, and legends don't mention such trivial details such as where the Master Sword's scabbard comes from.