Hadith #2573 (Sunan Abi Dawud)
Book: Jihad (Kitab Al-Jihad)
Narrator(s): Abu Hurairah, Muhammad bin 'Abdur Rahman b. Abi Dh'ab محمد بن عبد الرحمن بن أبي ذئب, Nafi' bin Abi Nafi' نافع بن أبي نافع البزاز
Grade: Hasan

My foster-father said to me – he was one of Banu Murrah ibn Awf, and he was present in that battle, the battle of Mu’tah: By Allah, as if I am seeing Ja’far who jumped from his reddish horse and hamstrung it; he then fought with the people until he was killed.
Abu Dawud said: The tradition is not strong.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-2573/