The Messenger of Allah (ﷺ) said to me: There have been sent down to me verses the like of which had never been seen before. They are the Mu'awwadhatain.
Sahih Muslim Book 6, Hadith 320
← Previous Hadith What wonderful verses have been sent down today. the like of which has never been seen! They are:" Say: I seek refuge with the Lord of the dawn," and" Say: I seek refuge with the Lord of men."

Sahih Muslim Book 6, Hadith 319 Next Hadith → This hadith has been narrated through another chain of transmitters directly from the Companions of Muhammad (ﷺ).

Sahih Muslim Book 6, Hadith 321