Scooby-Doo in Arabian Nights (1994) on Netflix

Plot summary

In Arabia, the young Caliph hires Scooby-Doo and Shaggy as royal food tasters. They eat their way through everything set before them, leaving nothing for the Caliph, and his guards chase them. Shaggy hides in a harem girl's disguise, and the Caliph, who is searching for a wife, takes a liking to the disguise and announces a wedding. To put him to sleep, Shaggy tells two stories. The first concerns a Sultan worried that his son, the Prince, has not chosen a bride, and Aliyah-Din, the young woman the Prince notices washing clothes by a river. Haman, the vizier, wants the throne and believes a magic lamp in a cave, revealed every three years under a blue moon, will give it to him. The cave opens only to a person pure of heart, and that person is Aliyah-Din.