A more thorough explanation:

Definition: Referral is the act of sending or directing someone to another person or organization for information, service, consideration, or decision.

For example, if a doctor cannot provide the necessary treatment for a patient, they may refer the patient to a specialist who can provide the required treatment. Similarly, if a client needs legal advice on a specific matter, they may be referred to an employment-law specialist who can provide the necessary guidance.

Referral is a common practice in many industries, including healthcare, legal, and business. It allows individuals to receive specialized services or information that they may not have access to otherwise.