1 Kings 2:28-29

28When Adonijah had tried to become king, Joab had joined with him. (But he had not joined with Absalom.) Joab heard the news about what had happened to Adonijah and Abiathar. So he hurried to the Lord's holy tent. He took hold of the horns of the altar there.

29King Solomon heard that Joab had gone to the altar in the Lord's holy tent. He commanded Jehoiada's son Benaiah, ‘Go there! Knock Joab down to kill him!’