Imam Ahmad recorded from `Uqbah bin `Amir that he said, "While I was leading the Messenger of Allah along one of these paths he said,

«يَا عُقْبَةُ أَلَا تَرْكَبُ؟»

(O `Uqbah! Will you not ride) I was afraid that this might be considered an act of disobedience. So the Messenger of Allah got down and I rode for a while. Then he rode. Then he said,

«يَا عُقْبَةُ، أَلَا أُعَلِّمُكَ سُورَتَيْنِ مِنْ خَيْرِ سُورَتَيْنِ قَرَأَ بِهِمَا النَّاسُ؟»

(O `Uqbah! Should I not teach you two Surahs that are of the best two Surahs that the people recite) I said, `Of course, O Messenger of Allah.' So he taught me to recite

﴿قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ ﴾

(Say: "I seek refuge with the Lord of Al-Falaq.'') (113:1) and

﴿قُلْ أَعُوذُ بِرَبِّ النَّاسِ ﴾

(Say: "I seek refuge with the Lord of mankind.'') (114:1) Then the call was given to begin the prayer and the Messenger of Allah went forward (to lead the people), and he recited them in the prayer. Afterwards he passed by me and said,

«كَيْفَ رَأَيْتَ يَا عُقَيْبُ، اقْرَأْ بِهِمَا كُلَّمَا نِمْتَ وَكُلَّمَا قُمْتَ»

(What do you think, O `Uqayb Recite these two Surahs whenever you go to sleep and whenever you get up.)''

An-Nasa'i and Abu Dawud both recorded this Hadith.