Rashi on Deuteronomy 17:13/רש"י על דברים י״ז:י״ג

1וכל העם ישמעו AND ALL THE PEOPLE SHALL HEAR [AND FEAR] — From here we derive the law that they wait for him (i.e. defer the execution of a זקן ממרא, an elder who disregards the decision of the Supreme Court, to whom Scripture refers in v. 12 by the words והאיש אשר יעשה בזדון) until the next festival (when all Israel is assembled in Jerusalem) and they put him to death at the season of the festival (Sanhedrin 89a).