"I followed the Messenger of Allah ﷺ when he was riding, and I placed my hand on his foot and said : O Messenger of Allah, teach me Surah Hud and Surah Yusuf. He said: 'You will never recite anything greater before Allah than: "Say: I seek refuge with (Allah), the Lord of the daybreak." And "Say: I seek refuge with (Allah) the Lord of mankind.'" (Using translation from Nasāʾī 953)   

أَنَّهُ قَالَ اتَّبَعْتُ رَسُولَ اللهِ ﷺ وَهُوَ رَاكِبٌ فَوَضَعْتُ يَدِي عَلَى قَدَمِهِ فَقُلْتُ أَقْرِئْنِي سُورَةَ هُودٍ أَوْ سُورَةَ يُوسُفَ فَقَالَ لَنْ تَقْرَأَ شَيْئًا أَبْلَغَ عِنْدَ اللهِ مِنْ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ  

[Machine] "He heard Uqbah bin 'Amir say, 'I followed the Messenger of Allah ﷺ while he was riding, so I placed my hand on his foot and said, 'O Messenger of Allah, teach me either a Surah from Surah Hud or a Surah from Surah Yusuf.' The Messenger of Allah ﷺ said, 'O Uqbah bin 'Amir, you will not recite a Surah more beloved to Allah or more significant to Him than "Say, 'I seek refuge in the Lord of daybreak'" (Surah Al-Falaq). If you can make sure it is not missed in your prayer, then do so.'"  

أَنَّهُ سَمِعَ عُقْبَةَ بْنَ عَامِرٍ يَقُولُ تَبِعْتُ رَسُولَ اللَّهِ ﷺ وَهُوَ رَاكِبٌ فَجَعَلْتُ يَدِي عَلَى قَدَمِهِ فَقُلْتُ يَا رَسُولَ اللَّهِ أَقْرِئْنِي إِمَّا مِنْ سُورَةِ هُودٍ وَإِمَّا مِنْ سُورَةِ يُوسُفَ فَقَالَ رَسُولُ اللَّهِ ﷺ «يَا عُقْبَةُ بْنَ عَامِرٍ إِنَّكَ لَنْ تَقْرَأَ سُورَةً أَحَبَّ إِلَى اللَّهِ وَلَا أَبْلَغَ عِنْدَهُ مِنْ أَنْ تَقْرَأَ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ فَإِنِ اسْتَطَعْتَ أَنْ لَا تَفُوتَكَ فِي صَلَاةٍ فَافْعَلْ»  

[Machine] I heard the Messenger of Allah ﷺ say, "You will not recite a chapter (Surah) that is more beloved to me and more beneficial than 'Say: I seek refuge in the Lord of daybreak (Falaq).' If you are able to not leave it in any prayer, then do so."  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «إِنَّكَ لَنْ تَقْرَأَ سُورَةً أَحَبَّ إِلَيَّ وَلَا أَبْلَغَ مِنْ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ فَإِنِ اسْتَطَعْتَ أَنْ لَا تَدَعَهَا فِي صَلَاةٍ فَافْعَلْ»  

[Machine] I heard the Messenger of Allah ﷺ once while he was riding, so I placed my hand on his foot and said, "O Messenger of Allah, recite for me a verse from Surah Hud or from Surah Yusuf." The Messenger of Allah ﷺ said, "O Uqbah ibn Amir, you will not recite a surah that is more beloved to Allah and more reach in virtue than reciting 'Say: I seek refuge in the Lord of Daybreak,' if you can ensure that you do not miss it in your prayers, then do so."  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَوْمًا وَهُوَ رَاكِبٌ فَوَضَعْتُ يَدِي عَلَى قَدَمِهِ فَقُلْتُ يَا رَسُولَ اللهِ أَقْرِئْنِي مِنْ سُورَةِ هُودٍ وَإِمَّا مِنْ سُورَةِ يُوسُفَ فَقَالَ رَسُولُ اللهِ ﷺ «يَا عُقْبَةُ بْنَ عَامِرٍ إِنَّكَ لَنْ تَقْرَأَ بِسُورَةٍ أَحَبَّ إِلَى اللهِ وَأَبْلَغَ عِنْدَهُ مِنْ أَنْ تَقْرَأَ بِقُلْ أَعُوذُ بِرَبِّ الْفَلَقِ فَإِنِ اسْتَطَعْتَ أَنْ لَا تَفُوتَكَ فِي صَلَاةٍ فَافْعَلْ»  

[Machine] He heard Uqbah bin Amir say, "I held onto the foot of the Messenger of Allah and said, 'O Messenger of Allah, teach me Surah Hud and Surah Yusuf.' The Messenger of Allah ﷺ said to me, 'O Uqbah, you will not recite a Surah more beloved to Allah and more effective in seeking refuge than 'Say: I seek refuge with (Allah) the Lord of Daybreak.'"  

أَنَّهُ سَمِعَ عُقْبَةَ بْنَ عَامِرٍ يَقُولُ تَعَلَّقْتُ بِقَدَمِ رَسُولِ اللهِ فَقُلْتُ يَا رَسُولَ اللهِ أَقْرِئْنِي سُورَةَ هُودٍ وَسُورَةَ يُوسُفَ فَقَالَ لِي رَسُولُ اللهِ ﷺ «يَا عُقْبَةُ إِنَّكَ لَنْ تَقْرَأَ بِسُورَةٍ أَحَبَّ إِلَى اللهِ وَلَا أَبْلَغَ مِنْ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ»  

[Machine] I said, "O Messenger of Allah, teach me a surah from Surah Yusuf or Surah Hud." He said, "O Uqbah, recite Qul a'udhu bi Rabbil-Falaq (Chapter 113) for indeed, you will not recite a surah more beloved to Allah and more beneficial for you than it. If you are able to not miss it, then do so."  

قُلْتُ يَا رَسُولَ اللهِ أَقْرِئْنِي مِنْ سُورَةِ يُوسُفَ أَوْ سُورَةِ هُودٍ قَالَ «يَا عُقْبَةُ اقْرَأْ بِقُلْ أَعُوذُ بِرَبِّ الْفَلَقِ فَإِنَّكَ لَنْ تَقْرَأَ سُورَةً أَحَبَّ إِلَى اللهِ ﷻ وَأَبْلَغَ عِنْدَهُ مِنْهَا فَإِنِ اسْتَطَعْتَ أَنْ لَا تَفُوتَكَ فَافْعَلْ»  

"يَا عُقْبَةُ بْنَ عَامِرٍ: إِنَّكَ لَنْ تَقْرَأَ بِسُورَة أحَبَّ إِلى الله، وَلاَ أبْلَغَ عِنْدَهُ مِنْ أنْ تَقْرَأَ " {قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ}، فَإِنِ اسْتَطَعْتَ أنْ لاَ تَفُوتَكَ فِى صَلاَةٍ فَافْعَلْ".