Sahih Muslim 7345
صحيح مسلم#7345SahihAbdullah reported:We were walking with Allah's Messenger (ﷺ) that Ibn Sayyad happened to pass by him. Allah's Messenger (ﷺ) said to him: I have concealed for you (something to test you, so tell me that). He said: It is Dukh. Thereupon Allah's Messenger (ﷺ) said to him: Be off. You cannot get farther than your rank, whereupon 'Umar said: Allah's Messenger, permit me to strike his neck. Thereupon Allah's Messenger (ﷺ) said: Leave him; if he is that one (Dajjal) whom you apprehend, you will not be able to kill him
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: 54:109