One Piece Chapter 3, page 15: Chapter 3: Enter Zolo: Pirate Hunter

Luffy approaches Zolo, who is still tied to the post. Zolo warns Luffy to leave before Helmeppo's father catches him. Luffy reveals he is looking for crewmates for his pirate crew. Zolo flatly refuses, saying he would never lower himself to become a pirate. Luffy defends his dream, and when Zolo asks if Luffy expects him to join just for untying him, Luffy replies that he hasn't even decided to ask him yet because of Zolo's bad reputation.