Sahih Muslim 488
صحيح مسلم#488SahihAbu Huraira reported:The Messenger of Allah (ﷺ) said: There is for every apostle a prayer, and I intend (if Allah so willed) that I would reserve my prayer for the intercession of my Ummah on the Day of Resurrection
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: 1:394