Musnad Ahmad 1077:1

Hashim narrated to us, from Muhammad ibn Ishaq, from al-Zuhri, Abdullah ibn Tha'labah ibn Su'ayr narrated to me, that the Messenger of Allah (peace and blessings of Allah be upon him) said on the day of Uhud: "Wrap them in their garments." He said: And he began to bury the group in the grave. He said: And he said: "Present the one among them who has the most Quran."