Sahih Muslim 698
صحيح مسلم#698Sahihحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَأَبُو كُرَيْبٍ قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ سُفْيَانَ، عَنْ سَلَمَةَ بْنِ كُهَيْلٍ، عَنْ كُرَيْبٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَامَ مِنَ اللَّيْلِ فَقَضَى حَاجَتَهُ ثُمَّ غَسَلَ وَجْهَهُ وَيَدَيْهِ ثُمَّ نَامَ .
Ibn 'Abbas reported:The Apostle (ﷺ) woke up at night; relieved himself, and then washed his face and hands and then again slept
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 3:20