"The Prophet [SAW] was given a gray mule which he rode, and 'Uqbah led it. The Messenger of Allah [SAW] said to 'Uqbah: 'Recite.' He said: 'What should I recite, O Messenger of Allah?' He said: 'Recite: 'Say: I seek refuge with (Allah) the Lord of the daybreak, from the evil of what He has created.' And he repeated it until I had learned it." (Using translation from Nasāʾī 5433)
أَنَّهُ قَالَ إِنَّ رَسُولَ اللهِ ﷺ أُهْدِيَتْ لَهُ بَغْلَةٌ شَهْبَاءُ فَرَكِبَهَا فَأَخَذَ عُقْبَةُ يَقُودُهَا لَهُ فَقَالَ رَسُولُ اللهِ ﷺ لِعُقْبَةَ اقْرَأْ فَقَالَ وَمَا أَقْرَأُ يَا رَسُولَ اللهِ؟ قَالَ النَّبِيُّ ﷺ اقْرَأْ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ فَأَعَادَهَا عَلَيْهِ حَتَّى قَرَأَهَا فَعَرَفَ أَنِّي لَمْ أَفْرَحْ بِهَا جِدًّا فَقَالَ لَعَلَّكَ تَهَاوَنْتَ بِهَا فَمَا قُمْتَ تُصَلِّي بِشَيْءٍ مِثْلِهَا