عَنِ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا أَنَّهُ قَالَ نَزَلَتْ يَا أَيُّهَا الَّذِينَ آمَنُوا أَطِيعُوا اللَّهَ وَأَطِيعُوا الرَّسُولَ وَأُولِي الْأَمْرِ مِنْكُمْ [سورة النساء: ٥٩] فِي عَبْدِ اللَّهِ بْنِ حُذَافَةَ بْنِ قَيْسِ بْنِ عَدِيٍّ السَّهْمِيِّ رَضِيَ اللَّهُ عَنْهُ إِذْ بَعَثَهُ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فِي السَّرِيَّةِ
It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him and his family) appointed Sayyiduna Abdullah bin Hudhafah Sahmi as the commander of an army. Regarding this, the following verse was revealed: {یَااَیُّھَا الَّذِیْنَ آمَنُوْا اَطِیْعُوا اللّٰہَ وَاَطِیْعُو الرَّسُوْلَ وَاُولِی الْاَمْرِمِنْکُمْ} … O you who believe! Obey Allah and obey the Messenger and those in authority among you.