1 Kings 2:19 (KJV)

And he said, Speak, I pray thee, unto Solomon the king, (for he will not say thee nay,) that he give me Abishag the Shunammite to wife.

And Bath–sheba said, Well; I will speak for thee unto the king.

Bath–sheba therefore went unto king Solomon, to speak unto him for Adonijah. And the king rose up to meet her, and bowed himself unto her, and sat down on his throne, and caused a seat to be set for the king’s mother; and she sat on his right hand.

Then she said, I desire one small petition of thee; I pray thee, say me not nay. And the king said unto her, Ask on, my mother: for I will not say thee nay.

And she said, Let Abishag the Shunammite be given to Adonijah thy brother to wife.