Sayyiduna Jabir (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Any slave who marries without the permission of his master is an adulterer."
Hadith Takhrijاس حدیث کی سند حسن ہے۔ دیکھئے: [أبوداؤد 2078] ، [ترمذي 1112] ، [أحمد 301/3] ، [ابن الجارود 686] ، [مشكل الآثار للطحاوي 297/3، وغيرهم]
Brief Explanation
(Commentary on Hadith 2269) That is, her marriage is not valid; this is the position of the noble Companions (radi Allahu anhum), Imam Ahmad and Imam Ishaq (rahimahumallah), and others.