Narrated Abu Qatadah:
That the Messenger of Allah (ﷺ) said: "Whoever kills someone in battle, having a proof for that, then his goods are his."
[Abu 'Eisa said:] There is a story with this Hadith.
Another Chain with similar meaning
There are narrations on this topic from 'Awf bin Malik, Khalid bin Al-Walid, Anas, and Samurah.
This Hadith is Hasan Sahih. Abu Muhammad is Nafi' the freed slave of Abu Qatadah.
This…