Sahih Muslim 5978
صحيح مسلم#5978SahihAbdullah reported Allah's Messenger (ﷺ) as saying; I shall be there at the Cistern before you, and I shall have to contend for some people, but I shall have to yield. I would be saying:My Lord, they are my friends, they are my friends, and it would be said: You don't know what innovations they made after you
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: 43:39