complimentary ticket

Translations
бесплатный билет
He received a complimentary ticket to the concert.
Он получил бесплатный билет на концерт.
Definitions
A complimentary ticket is a free pass or entry ticket provided to an individual, often as a gesture of goodwill, promotion, or as part of a marketing strategy, allowing them to attend an event or access a service without charge.
Words
complimentary

adjective
бесплатный
ticket

noun
билет