Arabian Nights (also known as One Thousand and One Nights) is a collection of stories collected over many centuries by various authors, translators and scholars in various countries of the Middle East. The collection is framed by the tale of an Arab sultan who marries a new woman each night and executes her the next morning. One wife, named Scheherazade, preserves her life (and those of countless other women) by telling the sultan a number of stories, timing them so that, come morning, he is left in suspense and pardons her for another day so she can resume the story that night. Arguably, the most famous stories in the Arabian Nights are "Aladdin and the Magic Lamp" and "Ali Baba and the Forty Thieves."
The Arabian Nights was popular in an alternate where 80% of the population of Europe was killed by the Great Black Deaths, although there were some differences in that version and the home timeline's version. Most notably, in the former, the historical figure Harun al-Rashid, was the king in the framing story, whereas in the latter it was a fictitious king. Nonetheless, Annette Klein was unable to convince her fellow female slaves that being a clever person like Scheherazade counted for more than her being beautiful. The other women did not accept her argument.
After several tries, Dan guessed the secret password for the Mendoza safe room as Mellon, a command from The Lord of the Rings. Had this turned out to be incorrect, his next choice would have been "Open, sesame!" A famous line from a similar scene in the Arabian Nights.