It was narrated from 'Abdur-Rahman bin Bujaid that his grandmother Umm Bujaid -who was one of those who gave the oath of allegiance to the Messenger of Allah - said to the Messenger of Allah: " The poor man stands at my door, and I cannot find anything to give him. " The Messenger of Allah said to her: "If you cannot find anything to give to him except a sheep's burned foot, then give it to him"
SahihSahihIsnaad SahihBook 23 · Hadith 140