Narrated Hisham ibn Amir: The Ansar came to the Messenger of Allah ﷺ on the day of Uhud and said: We have been afflicted with wound and fatigue. What do you command us? He said: Dig graves, make them wide, bury two or three in a single grave. He was asked: Which of them should be put first? He replied: The one who knew the Quran most. He (Hisham) said: My father Amir died on the day and was buried with two or one.

Narrated Anas ibn Malik: The Messenger of Allah ﷺ passed Hamzah who was killed and disfigured. He said: If Safiyyah were not grieved, I would have left him until the birds and beasts of prey would have eaten him, and he would have been resurrected from their bellies. The garments were scanty and the slain were in great number. So one, two and three persons were shrouded in one garment. The narrator Qutaybah added: They were then buried in one grave. The Messenger of Allah ﷺ asked: Which of the two learnt the Quran more? He then advanced him toward the qiblah (direction of prayer).

Narrated Jabir bin Abdullah: The Messenger of Allah ﷺ combined two persons from among the martyrs of Uhud (in one garment), and said: Which of the two has learnt the Quran more ? When one of them was pointed to him, he advanced him in the grave, saying: I shall be witness to all these (martyrs) on the Day of Judgement. He then ordered them to be buried without being washed.

The tradition mentioned above has also been transmitted by al-Laith through a different chain of the same effect. This version adds: He combined two persons from among the martyrs of Uhud in one garment.