The Closed Door Main Quest

In-game Description

When you tried to open the door to the Temple of Time, Rauru appeared and said he was the original owner of your new arm. He also said you need to revitalize the arm so the power of its touch will open the door. To do that, visit the island’s shrines. A green light spirals above each of them.

After Completing Three Shrines

Rauru appeared after you visited the three shrines. He said that you’ve revitalized enough power in your new arm to enter the Temple of Time.
The door will now open at the touch of your hand.

After Touching the Door

After visiting the three shrines, you returned to the Temple of Time. Its door opened to your touch, no longer denying you entry. Somehow, your new arm was truly revitalized enough in those shrines.