Sunan an-Nasa'i, Volume 5, Book 42, Hadith 4327 (DarusSalam) ⓘ
It was narrated from al-Bara bin Azib, from Thabnit bin Wadiah, that: a man brought a mastigure to the Prophet and he said? "A nation was transformed, and Allah knows best "
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، قَالَ حَدَّثَنَا شُعْبَةُ، عَنِ الْحَكَمِ، عَنْ زَيْدِ بْنِ وَهْبٍ، عَنِ الْبَرَاءِ بْنِ عَازِبٍ، عَنْ ثَابِتِ بْنِ وَدِيعَةَ، أَنَّ رَجُلاً، أَتَى النَّبِيَّ صلى الله عليه وسلم بِضَبٍّ فَقَالَ " إِنَّ أُمَّةً مُسِخَتْ وَاللَّهُ أَعْلَمُ " .
also referenced under: Hadith 4322 (Reference) & Book 42, Hadith 60 (In-Book)