Sunan an-Nasa'i 2012
سنن النسائي#2012Sahihأَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ، عَنْ يَزِيدَ، - وَهُوَ ابْنُ زُرَيْعٍ - قَالَ حَدَّثَنَا شُعْبَةُ، عَنْ أَبِي جَمْرَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ : جُعِلَ تَحْتَ رَسُولِ اللَّهِ صلى الله عليه وسلم حِينَ دُفِنَ قَطِيفَةٌ حَمْرَاءُ .
It was narrated that Ibn 'Abbas said:"When the Messenger of Allah was buried, a red velvet cloak was placed beneath him
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 GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 21:195