That the Prophet ﷺ said to a delegation from 'Abdul-Qais: "I order you to give the Khumus from your spoils of war." He said: There is a story with this Hadith  

أَنَّ النَّبِيَّ ﷺ قَالَ لِوَفْدِ عَبْدِ الْقَيْسِ آمُرُكُمْ أَنْ تُؤَدُّوا خُمُسَ مَا غَنِمْتُمْ قَالَ وَفِي الْحَدِيثِ قِصَّةٌ  

Another chain with similar narration.  

عَنِ ابْنِ عَبَّاسٍ نَحْوَهُ