Musannaf Ibn Abi Shayba 9:131

Al-Fadl ibn Dukayn narrated to us, from Abu Fatimah, who said: I asked Ibn Sirin. I said: A man said to his slave, "Take this slave-girl of mine, so-and-so; if you wish to take her for yourself, then do so, and if not, then sell her and return her price to me." He said: "Clothe her with a garment."