Sahih Muslim 3520
صحيح مسلم#3520SahihAbu Haraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:If any one of you is invited, he should accept (the invitation). In case he is fasting, he should pray (in order to bless the inmates of the house), and if he is not fasting he should eat
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: 16:123