Sunan an-Nasa'i 915
سنن النسائي#915Sahihأَخْبَرَنِي مُحَمَّدُ بْنُ قُدَامَةَ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ مُسْلِمٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ أُوتِيَ النَّبِيُّ صلى الله عليه وسلم سَبْعًا مِنَ الْمَثَانِي السَّبْعَ الطُّوَلَ .
It was narrated that Ibn Abbas said:"The Prophet (ﷺ) was given seven oft-recited; the seven long ones
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiDaif
In-book reference: 11:40