1 Kings 1:50-51

50But Adonijah was afraid of what Solomon would do to punish him. So he ran to the holy tent. He took hold of the horns of the altar there.

51Someone told Solomon, ‘Adonijah is afraid of you. He has taken hold of the horns of the altar. He says, “I want King Solomon to promise me today that he will not punish me with death. I am his servant.” ’