The Messenger of Allah (ﷺ) commanded to remove weapons and skins from the martyrs of Uhud, and that they should be buried with their blood and clothes.
Sunan Abi Dawud Book 21, Hadith 46
← Previous Hadith A man had a shot of arrow in his chest or throat (the narrator is doubtful). So he died. He was shrouded in his clothes as he was. The narrator said: We were with the Messenger of Allah (ﷺ).

Sunan Abi Dawud Book 21, Hadith 45 Next Hadith → The martyrs of Uhud were not washed, and they were buried with their blood. No prayer was offered over them.

Sunan Abi Dawud Book 21, Hadith 47