Sunan an-Nasa'i 1706
سنن النسائي#1706Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ جَبَلَةَ، قَالَ حَدَّثَنَا مَعْمَرُ بْنُ مَخْلَدٍ، - ثِقَةٌ - قَالَ حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عَمْرٍو، عَنْ زَيْدٍ، عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ، عَنْ مُحَمَّدِ بْنِ عَلِيٍّ، عَنِ ابْنِ عَبَّاسٍ، قَالَ اسْتَيْقَظَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَاسْتَنَّ وَسَاقَ الْحَدِيثَ .
Ubaidullah bin'Amr bin Zaid narrated from Habib bin Abi Thabit, from Muhammad bin Ali that Ibn 'Abbas said:"The Messenger of Allah (ﷺ) woke up and cleaned his teeth,' and he quoted the hadith
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: 20:109