It is narrated from Hazrat Abdullah bin Thalabah (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) came to the martyrs of Uhud and said: "Wrap them in their shrouds with their blood. I bear witness regarding them." Then two or three people were buried in each grave, and the Noble Prophet (peace and blessings be upon him) said: "See! Among them, whoever has memorized the most Qur'an, place him in the grave first." Thus, my father and uncle were buried in the same grave.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 23660