1 Kings 2:17-21

Then he said, “Please speak to Solomon the king—for he will not refuse you—that he may give me Abishag the Shunammite as a wife.”

And Bathsheba said, “Very well; I will speak to the king for you.” Adonijah Executed

So Bathsheba went to King Solomon, to speak to him for Adonijah. And the king stood to meet her, bowed to her, and sat on his throne; then he had a throne set up for the king’s mother, and she sat on his right.

Then she said, “I am making one small request of you; do not refuse me.” And the king said to her, “Ask, my mother, for I will not refuse you.”

So she said, “Let Abishag the Shunammite be given to Adonijah your brother as a wife.”