Sunan Ibn Majah 1965
سنن ابن ماجه#1965Da'ifحَدَّثَنَا أَبُو بَكْرِ بْنُ خَلاَّدٍ الْبَاهِلِيُّ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ عَمْرِو بْنِ دِينَارٍ، عَنْ جَابِرِ بْنِ زَيْدٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ نَكَحَ وَهُوَ مُحْرِمٌ .
It was narrated from Ibn 'Abbas that the Prophet got married while he was a Muhrim (in Ihram)
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:
Al-AlbaniShadh
Muhammad Fouad Abd al-BaqiShadh
Zubair Ali ZaiSahih Muslim
In-book reference: 9:121