Sahih Muslim 151
صحيح مسلم#151SahihIt is narrated on the authority of 'Abbas b. 'Abdul-Muttalib that he heard the Messenger of Allah saying:He has found the taste of faith (iman) who is content with Allah as his Lord, with Islam as his religion (code of life) and with Muhammad (ﷺ) as his Prophet
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: 1:58