Sahih Muslim 7105
صحيح مسلم#7105SahihJabir reported:I heard Allah's Messenger (way peace be upon him) as saying: The throne of Iblis is upon the ocean and he sends detachments (to different parts) inorder to put people to trial and the most important figure in his eyes is one who is most notorious in sowing the seed of dissension
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: 52:59