1 Kings 1:51-52

51So it was reported to Solomon: “Behold, Adonijah is afraid of King Solomon, for look, he grasped the horns of the altar, saying, ‘Let King Solomon swear to me first that he will not put his servant to death with the sword.’”

52Then Solomon said, “If he shows himself a worthy man, then not a hair of him will fall to the ground. But if wickedness is found in him, he shall die.”