Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that two men came to the Noble Prophet (peace and blessings be upon him); they both had the same need. When one of them spoke, the Prophet (peace and blessings be upon him) noticed an unpleasant odor from his mouth and said: "Do you not use the miswak?" He replied: "Yes, I certainly do, but the fact is that I have not eaten food for three days." Then the Prophet (peace and blessings be upon him) instructed a person, so he took him and fulfilled his need.