Jami` at-Tirmidhi 1112
جامع الترمذي#1112Hasanحَدَّثَنَا سَعِيدُ بْنُ يَحْيَى بْنِ سَعِيدٍ الأُمَوِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا ابْنُ جُرَيْجٍ، عَنْ عَبْدِ اللَّهِ بْنِ مُحَمَّدِ بْنِ عَقِيلٍ، عَنْ جَابِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أَيُّمَا عَبْدٍ تَزَوَّجَ بِغَيْرِ إِذْنِ سَيِّدِهِ فَهُوَ عَاهِرٌ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
(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
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 11:33