بسم الله الرحمن الرحيم

Amr Bin Thaabit (rahimahullaah) said: When Ali Ibnul Husayn (rahimahullaah) passed away and was being given a bath, they (i.e. those giving him a bath) looked at a black mark that was on his back; so they said, ”What is this (black mark)?” They (i.e. some other people who were present) said, ”He used to carry a sack of flour at night to give to the poor people of Madeenah.”

[Sifatus Safwa: 2/96]