Funerals (Kitab Al-Jana'iz)
Dawud :: Book 20 : Hadith 3200
Narrated Al-Muttalib:
When Uthman ibn Maz'un died, he was brought out on his bier and buried. The Prophet (peace_be_upon_him) ordered a man to bring him a stone, but he was unable to carry it. The Apostle of Allah (peace_be_upon_him) got up and going over to it rolled up his sleeves.
The narrator Kathir told that al-Muttalib remarked: The one who told me about the Apostle of Allah (peace_be_upon_him) said: I still seem to see the whiteness of the forearms of the Apostle of Allah (peace_be_upon_him) when he rolled up his sleeves. He then carried it and placed it at his head saying: I am marking my brother's grave with it, and I shall bury beside him those of my family who die.