Musannaf Ibn Abi Shayba 7:207

Dāwūd ibn Kathīr al-Jurayrī narrated to us, from Ṭāriq ibn Abī Murrah, who said: I made a vow regarding a slave girl of my wife, that if I had intercourse with her, she would be a gift to the House of Allāh. Then I had intercourse with her, so I asked Saʿīd ibn Jubayr. He said: "Purchase a sacrificial camel with her price, then slaughter it."