Musannaf Ibn Abi Shaybah 21767 — A man who buys a slave woman, she

Sayyiduna Ali (may Allah be pleased with him) was asked: If a man buys a slave woman and she bears him children, and then a man establishes proof that she belongs to him, what is the ruling? He said: This slave woman will be returned to him, the value of her child will be assessed against the buyer, and the one who sold her will be made to pay it, whether it is much or little.