Sunan an-Nasa'i 4194
سنن النسائي#4194Sahihأَخْبَرَنَا الْحَسَنُ بْنُ مُحَمَّدٍ، قَالَ حَدَّثَنَا حَجَّاجٌ، قَالَ قَالَ ابْنُ جُرَيْجٍ أَخْبَرَنِي يَعْلَى بْنُ مُسْلِمٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، { يَا أَيُّهَا الَّذِينَ آمَنُوا أَطِيعُوا اللَّهَ وَأَطِيعُوا الرَّسُولَ } قَالَ نَزَلَتْ فِي عَبْدِ اللَّهِ بْنِ حُذَافَةَ بْنِ قَيْسِ بْنِ عَدِيٍّ بَعَثَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي سَرِيَّةٍ .
It was narrated from Ibn 'Abbas (concerning the Verse):"O you who believe! Obey Allah and obey the Messenger (Muhammad). That he said: This was revealed concerning 'Abdullah bin Hudhaifah bin Qais bin 'Adiyy, whom the Messenger of Allah appointed in charge of an expedition
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: 39:46