'Grasped' in the Bible

Adonijah was afraid because of Solomon, and he got up and went and grasped the horns of the altar.

Solomon was told, "Look, Adonijah is afraid of King Solomon, and he has grasped the horns of the altar, saying, 'Let King Solomon swear to me {first} that he will surely not kill his servant with the sword!'"

When the message came to Joab (now Joab {had supported} Adonijah but {had not supported} Absalom), he fled to the tent of Yahweh and grasped the horns of the altar.