Sunan Ibn Majah, Book 9, Hadith 2041 (In-Book) ⓘ
It was narrated from Ibn 'Abbas that: the Prophet got married while he was a Muhrim (in Ihram).
حَدَّثَنَا 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 .
also referenced under: Hadith 1955 (Reference) & Volume 3, Book 9, Hadith 1955 (DarusSalam)