Sahih Muslim 4779
صحيح مسلم#4779SahihIt has been narrated on the authority of Usaid b. Hudair that a man from the Ansar took the Messenger of Allah (ﷺ) aside and said to him:Will you not appoint me governor as you have appointed so and so? He (the Messenger of Allah) said: You will surely come across preferential treatment after me, so you should be patient until you meet me at the Cistern (Haud-i-Kauthar)
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: 33:77