Hazrat Abu Hurairah (RA) narrates once a Bedouin caught hold of Nabi's (Sallallahu Alaihi Wasallam) sheet and yanked it so harshly, that Nabi's (Sallallahu Alaihi Wasallam) blessed neck became red. The sheet also happened to be made from coarse cloth. When Nabi (Sallallahu Alaihi Wasallam) turned around, the Bedouin said, “Load these two camels of mine with food, the food is neither being distributed from your wealth, nor from your father's wealth.” (the wealth referred to is that which was accumulated in the public treasury). Nabi (Sallallahu Alaihi Wasallam) consequently instructed a Sahabi (RA) to load one with dates and the other with wheat and flour. (Abu Dawood)