Sahih Muslim 2040
صحيح مسلم#2040SahihAbdullah b. 'Umar, while describing the Nafl prayer of the Messenger of Allah (ﷺ), said:He did not observe (Nafl) prayer after Jumu'a till he went back and observed two rak'ahs in his house. Yahya said: I guess that I uttered these words (before Imam Malik) that he of course observed (them)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 7:90