Sunan Ibn Majah 488
سنن ابن ماجه#488Sahihحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو الأَحْوَصِ، عَنْ سِمَاكِ بْنِ حَرْبٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ أَكَلَ النَّبِيُّ ـ صلى الله عليه وسلم ـ كَتِفًا ثُمَّ مَسَحَ يَدَيْهِ بِمِسْحٍ كَانَ تَحْتَهُ ثُمَّ قَامَ إِلَى الصَّلاَةِ فَصَلَّى .
It was narrated that Ibn 'Abbas said:"The Messenger of Allah ate a shoulder, then he wiped his hands on a Mish that was underneath him, then he got up for prayer, and performed the prayer
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:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautDaif
Zubair Ali ZaiDaif
In-book reference: 1:222