1 Kings 1:13, 17

Go in to King David and say to him, ‘My lord the king, did you not swear to me your servant: “Surely Solomon your son shall be king after me, and he will sit on my throne”? Why then has Adonijah become king?’

She said to him, “My lord, you yourself swore to me your servant by the LORD your God: ‘Solomon your son shall be king after me, and he will sit on my throne.’