It is narrated from Sayyiduna Anas (may Allah be pleased with him) that he said: I saw the Muhajirun and the Ansar digging the trench around Madinah, carrying earth on their backs and saying: "We are the ones who have pledged allegiance to Muhammad (peace and blessings be upon him) upon Islam, for as long as we live." And the Messenger of Allah (peace and blessings be upon him) was answering them, saying: "O Allah! The real good is only the good of the Hereafter, so bless the Ansar and the Muhajirun." Then a bowl would be brought to them containing two handfuls of coarsely crushed barley, prepared in stale, rancid fat. It would be placed before the people while they were in a state of severe hunger, and that food would stick in the throat and had a foul smell. This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it with this addition.