أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنَا قَيْسٌ، عَنْ عُقْبَةَ بْنِ عَامِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ أُنْزِلَ عَلَىَّ آيَاتٌ لَمْ يُرَ مِثْلُهُنَّ ‏{‏ قُلْ أَعُوذُ بِرَبِّ الْفَلَقِ ‏}‏ إِلَى آخِرِ السُّورَةِ وَ ‏{‏ قُلْ أَعُوذُ بِرَبِّ النَّاسِ ‏}‏ ‏"‏ ‏.‏ إِلَى آخِرِ السُّورَةِ ‏.‏

It was narrated from 'Uqbah bin 'Amir that: The Prophet [SAW] said: "There have been revealed to me Verses the like of which has never been seen: 'Say: I seek refuge with (Allah) the Lord of the daybreak...' to the end of the Surah, and 'Say: I seek refuge with (Allah) the Lord of mankind...' to the end of the Surah." Translation Not Available

Book Ref: Sunan An Nisai Book 50 Hadith 5440
Web Ref:  Sunan An Nisai Vol 6 Book 50 Hadith 5442