Ibn al-Kawwa' asked Sayyiduna Ali (may Allah be pleased with him) about a slave woman who was married to a man; he gave her two divorces and then bought that slave woman. He said: This slave woman is not lawful for that man.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15203
Abu Abd al-Rahman narrates from Sayyiduna Zayd bin Thabit (may Allah be pleased with him) that if a man buys a slave woman after giving her three divorces, this slave woman is not lawful for him until she marries another husband.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15204
Ibn Abi al-Zinad (may Allah have mercy on him) narrates from his father, from the jurists of the people of Madinah, that a man who married a slave woman, after which she became separated from him by an irrevocable divorce, then her master took her as a concubine, and then her husband bought that slave woman: this slave woman will not become lawful for the husband through her master's taking her as a concubine, nor through her coming into his ownership, until she marries another husband.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15205
Ibrahim (may Allah have mercy on him) narrates from Abidah al-Salmani (may Allah have mercy on him) that this slave woman is not lawful for him except through the same way by which she became unlawful for him, (concerning the case) where a man gave a slave woman two divorces and then bought her. He said: When a slave woman was married to a man and he gave her two divorces, and then the slave woman's master kept having intercourse with her, the master does not make her lawful for the husband. Had he been her husband, he would make her lawful for the first.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15206