I was driving the she-camel of the Messenger of Allah ﷺ during a journey. He said to me: Uqbah, should I not teach you two best surahs ever recited? He then taught me: "Say, I seek refuge in the Lord of the dawn," and "Say, I seek refuge in the Lord of men." He did not see me much pleased (by these two surahs). When he alighted for prayer, he led the people in the morning prayer and recited them in prayer. When the Messenger of Allah ﷺ finished his prayer, he turned to me and said: O Uqbah, how did you see.  

كُنْتُ أَقُودُ بِرَسُولِ اللَّهِ ﷺ نَاقَتَهُ فِي السَّفَرِ فَقَالَ لِي يَا عُقْبَةُ أَلاَ أُعَلِّمُكَ خَيْرَ سُورَتَيْنِ قُرِئَتَا فَعَلَّمَنِي { قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ } وَ { قُلْ أَعُوذُ بِرَبِّ النَّاسِ } قَالَ فَلَمْ يَرَنِي سُرِرْتُ بِهِمَا جِدًّا فَلَمَّا نَزَلَ لِصَلاَةِ الصُّبْحِ صَلَّى بِهِمَا صَلاَةَ الصُّبْحِ لِلنَّاسِ فَلَمَّا فَرَغَ رَسُولُ اللَّهِ ﷺ مِنَ الصَّلاَةِ الْتَفَتَ إِلَىَّ فَقَالَ يَا عُقْبَةُ كَيْفَ رَأَيْتَ  

White I was travelling with the Messenger of Allah ﷺ between al-Juhfah and al-Abwa', a wind and intense darkness enveloped us, whereupon the Messenger of Allah ﷺ began to seek refuge in Allah, reciting: "I seek refuge in the Lord of the dawn," and "I seek refuge in the Lord of men." He then said: Uqbah, use them when seeking refuge in Allah, for no one can use anything to compare with them for the purpose. Uqbah added: I heard him reciting them when he led the people in prayer.  

بَيْنَا أَنَا أَسِيرُ مَعَ رَسُولِ اللَّهِ ﷺ بَيْنَ الْجُحْفَةِ وَالأَبْوَاءِ إِذْ غَشِيَتْنَا رِيحٌ وَظُلْمَةٌ شَدِيدَةٌ فَجَعَلَ رَسُولُ اللَّهِ ﷺ يَتَعَوَّذُ بِ { أَعُوذُ بِرَبِّ الْفَلَقِ } وَ { أَعُوذُ بِرَبِّ النَّاسِ } وَيَقُولُ يَا عُقْبَةُ تَعَوَّذْ بِهِمَا فَمَا تَعَوَّذَ مُتَعَوِّذٌ بِمِثْلِهِمَا قَالَ وَسَمِعْتُهُ يَؤُمُّنَا بِهِمَا فِي الصَّلاَةِ