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.  

وَاللَّهِ لَكَأَنِّي أَنْظُرُ إِلَى جَعْفَرٍ حِينَ اقْتَحَمَ عَنْ فَرَسٍ لَهُ شَقْرَاءَ فَعَقَرَهَا ثُمَّ قَاتَلَ الْقَوْمَ حَتَّى قُتِلَ