The Question and Answer section for Don Quixote Book II is a great resource to ask questions, find answers, and discuss the novel.
The innkeeper tells Quixote that he needs a squire who can look after his practical matters while he goes off chasing dragons or "whatever it is that you do".
The innkeeper offers to let Qixote let him keep his vigil in the courtyard yard. The mule water boys end up throwing stones at Quixote when he refuses to let them pass to water the mules. The people watching this find the scene most entertaining....
What chapter are you referring to?