Sunan an-Nasa'i 1702
سنن النسائي#1702Sahihأَخْبَرَنَا الْحُسَيْنُ بْنُ عِيسَى، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، قَالَ حَدَّثَنَا زَكَرِيَّا بْنُ أَبِي زَائِدَةَ، عَنْ أَبِي إِسْحَاقَ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ كَانَ رَسُولُ اللَّهِ صلى الله عليه وسلم يُوتِرُ بِثَلاَثٍ يَقْرَأُ فِي الأُولَى بِـ { سَبِّحِ اسْمَ رَبِّكَ الأَعْلَى } وَفِي الثَّانِيَةِ بِـ { قُلْ يَا أَيُّهَا الْكَافِرُونَ } وَفِي الثَّالِثَةِ بِـ { قُلْ هُوَ اللَّهُ أَحَدٌ } أَوْقَفَهُ زُهَيْرٌ .
Zakariyya bin Abi Za'idah narrated from Abu Ishaq, from Sa'id bin Jubair, that Ibn Abbas said:"The Messenger of Allah (ﷺ) used to pray witr with three rak'ahs. In the first he would recite "Glorify the Name of Your Lord, the Most High;" in the second: "Say: O You disbelievers!" and in the third: "Say: He is Allah, (the) One
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:
In-book reference: 20:105