Final answer:
Sancho and Don Quixote's failure to pay at the inn is a scene from 'Don Quixote' that highlights the novel's comedic elements and the clash between Don Quixote's chivalric delusions and reality.
Step-by-step explanation:
The incident where Sancho and Don Quixote fail to pay the inn occurs in the novel Don Quixote by Miguel de Cervantes. In the storyline, after a series of misadventures, the duo finds themselves unable to settle their bill at the inn, which they mistakenly believe to be a castle. Their failure to pay leads to a comical and chaotic situation where the innkeeper demands payment, and in the confusion, Don Quixote is convinced that the inn is enchanted and that they should not have to pay for services at an enchanted place. The reaction of the innkeeper and other guests to their refusal to pay adds to the novel's humor and serves as a critique of the chivalric ideals that Don Quixote strives to embody.