The Prophet said: "There have been revealed to me Verses the like of which has never been seen: 'Say: I seek refuge with (Allah) the Lord of the daybreak...' to the end of the Surah, and 'Say: I seek refuge with (Allah) the Lord of mankind...' to the end of the Surah."
Sunan an-Nasa'i Book 50, Hadith 13
← Previous Hadith "I came to the Messenger of Allah while he was riding, and I put my hand on his foot and said: 'Teach me Surah Hud, teach me Surah Yusuf. He said: 'You will never recite anything more precious before Allah, the Mighty and Sublime, than: 'Say: I seek refuge with (Allah) the Lord of the daybreak.'"

Sunan an-Nasa'i Book 50, Hadith 12 Next Hadith → "The Messenger of Allah said to me: 'Recite, O Jabir!' I said: 'What should I recite, may my father and mother be ransomed for you, O Messenger of Allah?' He said: Recite: 'Say: I seek refuge with (Allah) the Lord of the daybreak...,' and: 'Say: I seek refuge with (Allah) the Lord of mankind...' So I recited them, and he said: 'Recite them, for you will never recite anything like them.'"

Sunan an-Nasa'i Book 50, Hadith 14