Then, too, whoever strives in a competition is not crowned, unless he has competed lawfully
Other versions
King James Version
And if a man also strive for masteries, yet is he not crowned, except he strive lawfully.English Standard Version
An athlete is not crowned unless he competes according to the rules.New International Version
Similarly, if anyone competes as an athlete, he does not receive the victor's crown unless he competes according to the rules.