The voice just says "Do what you want, but don't touch anything."

Thus they are able to go inside. After a small regular stone hallway they enter a treasury that's full of golden statues of different kind (animals, mythological beings). All of them have different gemstones as eyes and other features.

Each of them may feel a sensation of wanting to touch different statues - like they're calling for them.

The door is just on the other side of the treasury.