referral
nounUK /rɪˈfɜː.rəl/
US /rɪˈfɝː.əl/
A referral is when you send someone to another person who can help them.
The doctor gave me a referral to see a special eye doctor.
OTHER MEANINGS
2. The act of sending a patient to another doctor or specialist for care.
The clinic made a referral to a heart specialist.
3. A person or business sent to another by someone who trusts them.
The new client was a referral from a happy customer.
4. The act of passing a question or problem to a higher authority for a decision.
The judge ordered a referral of the case to a higher court.