´(Another chain) Jabir bin Abdullah narrated that:` Abdullah narrated that the Prophet said: "Whichever slave gets married without the permission of his owner, then he is a fornicator."
Hadith Referenceسنن ترمذي / كتاب النكاح عن رسول الله صلى الله عليه وسلم / 1112
Hadith Gradingالألبانی:حسن انظر ما قبله (1111) | زبیر علی زئی:(1111 ، 1112) إسناده ضعيف / د 2078
Narrated Jabir (RA): Allah's Messenger (ﷺ) said: "Any slave who marries without the permission of his masters or owners is (like) a fornicator." [Reported by Ahmad, Abu Dawud, an-Nasa'i and at-Tirmidhi; the latter graded it Sahih (authentic), as did Ibn Hibban].