Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Prophet Muhammad (peace and blessings be upon him) said: "Abu Bakr is a good man, Umar is a good man, Mu'adh bin Amr is a good man, Mu'adh bin Jabal is a good man, and Abu Ubaidah bin Jarrah is a good man, and such-and-such person is a bad man," until the Prophet Muhammad (peace and blessings be upon him) mentioned the names of seven people (that they are bad).