"The Statue's Bargain" is a Side Quest in Breath of the Wild.
||The horned statue in Hateno Village took one of your containers!|
The only thing to do is talk to him and try to convince him to give it back.
||You persuaded the horned statue to return your container. Now you can exchange containers for a small cost. The horned statue will buy a Heart Container or Stamina Vessel for 100 rupees and sell your choice afterward for 120 rupees.