Sunan an-Nasa'i, Hadith 4194 ⓘ
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"
أَخْبَرَنَا 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 .
also referenced under: Book 39, Hadith 46 (In-Book) & Volume 5, Book 39, Hadith 4199 (DarusSalam)