Narrated by:Narrated Ibn 'Abbas:
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 [Abu 'Eisa said:] This Hadith is Hasan Sahih.
حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا عَبَّادُ بْنُ عَبَّادٍ الْمُهَلَّبِيُّ، عَنْ أَبِي جَمْرَةَ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ لِوَفْدِ عَبْدِ الْقَيْسِ آمُرُكُمْ أَنْ تُؤَدُّوا خُمُسَ مَا غَنِمْتُمْ . قَالَ وَفِي الْحَدِيثِ قِصَّةٌ . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Tirmizi
The Book on Military Expeditions • Hadith 1643