Bismillah.
Hadith no. 1125 is a repeat. Read it here.
Narrated Jabir bin Abdullah:
The Prophet collected every two martyrs of Uhud in one piece of cloth, then he would ask, "Which of them had (knew) more of the Quran?" When one of them was pointed out for him, he would put that one first in the grave and say, "I will be a witness on these on the Day of Resurrection." He ordered them to be buried with their blood on their bodies and they were neither washed nor was a funeral prayer offered for them.
Narrated 'Uqba bin 'Amir:
One day the Prophet went out and offered the funeral prayers of the martyrs of Uhud and then went up the pulpit and said, "I will pave the way for you as your predecessor and will be a witness on you. By Allah! I see my Fount (Kauthar) just now and I have been given the keys of all the treasures of the earth (or the keys of the earth). By Allah! I am not afraid that you will worship others along with Allah after my death, but I am afraid that you will fight with one another for the worldly things."
Narrated Jabir bin 'Abdullah :
The Prophet buried every two martyrs in of Uhud in one grave.
Narrated Jabir:
The Prophet said, "Bury them (i.e. martyrs) with their blood." (that was) On the day of the Battle of Uhud. He did not get them washed.
Narrated Jabir bin 'Abdullah :
Allah's Apostle shrouded every two martyrs of Uhud in one piece of cloth and then he would ask, "Which of them knew more Quran?" When one of them was pointed out he would put him first in the grave. He said, "I am a witness on these." Then he ordered them to be buried with blood on their bodies. Neither did he offer their funeral prayer nor did he get them washed. (Jabir bin Abdullah added): Allah's Apostle used to ask about the martyrs of Uhud as to which of them knew more of the Quran." And when one of them was pointed out as having more of it he would put him first in the grave and then his companions. (Jabir added): My father and my uncle were shrouded in one sheet.
Sunnah is to bury the martyr in the clothes in which he was killed. More on shrouding the martyrs here.
It is also a Sunnah to visit the graves of the martyrs of Uhud in Madinah. [Ibn Uthaymeen's view]
Wassalam.