"The Biggoron's Sword... You got a Claim Check for it! You can't wait for the sword to be completed!"
— In-game description
The Claim Check as it appears in-game

The Claim Check is a quest item from The Legend of Zelda: Ocarina of Time. Biggoron gives Link this after the hero gives Biggoron the World's Finest Eye Drops on Death Mountain Summit. After Link waits for three days, Biggoron rewards him with the repaired Biggoron's Sword, thus completing the Quest for Biggoron's Sword. A quick way to pass the three days is to simply play the "Sun's Song" six times; one for each sunrise and one for each nightfall.

After the sword is obtained, Biggoron allows Link to keep the Claim Check as a souvenir. As it has no real use after this, it can be used for the bottle glitch.