Musannaf Ibn Abi Shayba 13:2193

Abu Bakr narrated to us, he said: Abu Dawud al-Tayalisi narrated to us, from Imran al-Qattan, he said: I heard al-Hasan, and he was asked about a man who saw a slave girl in the market being sold, and she said, "I am stolen." He said: "She is to be bought, and she is not to be believed." And I asked Qatadah, and he disliked that.