Sahih Muslim 2251
صحيح مسلم#2251SahihAbu Marthad al-Ghanawi reported Allah's Messenger (ﷺ) as saying:Do not pray facing towards the graves, and do not sit on 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: 11:127