Sunan an-Nasa'i 3272
سنن النسائي#3272Da'ifأَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ عَمْرٍو، عَنْ أَبِي الشَّعْثَاءِ، أَنَّ ابْنَ عَبَّاسٍ، أَخْبَرَهُ أَنَّ النَّبِيَّ صلى الله عليه وسلم تَزَوَّجَ مَيْمُونَةَ وَهُوَ مُحْرِمٌ .
It was narrated from Abu Ash-Sha'tha' that Ibn 'Abbas told him:"The Prophet married Maimunah when he was a Muhrim
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:
Abu GhuddahShadh
Al-AlbaniShadh
Zubair Ali ZaiSahih
In-book reference: 26:77