Abu Muammad al-Ansari, who was the close companion of Abu Qatada. narrated the hadith (which follows).
Sahih Muslim Book 32, Hadith 47
← Previous Hadith It has been narrated on the authority of Abdullah b. 'Umar that the Messenger of Allah (ﷺ) used to give (from the spoils of war) to small troops seat on expeditions something more than the due share of each fighter in a large force. And Khums (one-fifth of the total spoils) was to be reserved (for Allah and His Apostle) in all cases.

Sahih Muslim Book 32, Hadith 46 Next Hadith → Abu Muhammad, the freed slave of Abu Qatada reported on the authority of Abu Qatda and narrated the hadith.

Sahih Muslim Book 32, Hadith 48