Sahih Muslim 3509
صحيح مسلم#3509SahihIbn Umar (Allah be pleased with him) reported that Allah's Messenger (ﷺ) said:When any one of you is invited to a feast, he should attend it
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: 16:112