This page explains how to start and complete the A Gift from the Monks side quest.
How to Start the Quest
After you complete all 120 shrines, the monk will give you this quest.
How to Complete the Quest
Go to the Forgotten Temple in northwest Hyrule and open the chests in front of the Goddess Statue to get the Wild set. This set is based on Link's clothing from the first Legend of Zelda game.