Sunan Ibn Majah 488
سنن ابن ماجه#488Da'ifIt 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
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautDaif
Zubair Ali ZaiDaif
In-book reference: 1:222