How does polonius suggest that reynaldo gather information?

Polonius instructs Reynaldo to gather information about his son Laertes by subtly probing into the social circles of Paris. He suggests that Reynaldo should inquire about Laertes' behavior by asking leading questions and spreading rumors that are not outright false, allowing him to gauge Laertes' reputation without direct confrontation. This approach highlights Polonius' cunning and manipulative nature in seeking to control the narrative around his son.