(1) باب
It was narrated that 'Uqbah bin 'Amir said:
"I was leading the Messenger of Allah [SAW] (on his mount) on a journey, and the Messenger of Allah [SAW] said: 'O 'Uqbah, shall I not teach you the best two Surahs that can be recited?' And he taught me: 'Say: I seek refuge with (Allah) the Lord of the daybreak.' And 'Say: I seek refuge with (Allah) the Lord of mankind...' He thought that I did not seem too overjoyed with them, so when he stopped to pray Subh, he recited them when he led the people in the Subh prayer. When the Messenger of Allah [SAW] finished praying, he turned to me and said: 'O 'Uqbah, what do you think?'"
Reference: Sunan an-Nasa'i 5436
In-book reference: Book 50, Hadith 9
English translation: Vol. 6, Book 50, Hadith 5438