Hanuman bowed before Ravana, who sat proudly on his crystal throne.
"I am Rama's messenger!" Hanuman proclaimed. "I allowed you to capture me so I could give you this warning: if you wish to survive, you must return Sita to her husband now. You may be the mighty king of the rakshasas, but no one can protect you from Rama."
"I am going to kill you, monkey!" shouted Ravana.
But Vibhishana intervened. "No, my brother! A messenger's life is sacred. You cannot kill Rama's messenger."
Ravana knew Vibhishana was right. "I will punish the monkey some other way!" he growled.
Inspired by: Valmiki's Ramayana
Notes: This is the Sundara Kanda (Book 5), sarga 50 and following.