He gave the keys to the castle and told him not to go into the door locked by the golden key. The prince went into it and found a spy glass that showed him the beautiful Princess Kiralina, and he fell so in love with her that he was sick and near dying.
He handed over the master key and warned him not to enter the door secured by the golden key. The prince entered it and discovered a spyglass that revealed to him the stunning Princess Kiralina, and he became so enamored with her that he fell gravely ill.