As night enveloped the city, Polly and her companions faced the unyielding door, their quest seemingly thwarted. Yet, Polly's observant nature did not falter. She noticed a series of small, worn carvings along the doorframe, each linked to a tale she had heard from Adil.
"Look here," Polly chirped excitedly, pointing with her beak. "These stories speak of a key hidden where the moonlight kisses the earth at dusk."
Leila and Omar exchanged glances, comprehension dawning in their eyes. It was a riddle, one that pointed to a specific location within the city where the moonlight would illuminate a hidden key.
Hastily, they retraced their steps, guided by Polly's intuition. As they reached a secluded courtyard, the moonlight revealed a small indentation in the stonework. Leila reached inside, pulling out a rusted, ancient key.
With bated breath, they returned to the door. The key turned smoothly, and slowly, the door creaked open, revealing a hidden chamber filled with artifacts—tapestries, scrolls, and, at the center, the legendary treasure of Sultan Malik.