Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said: "Soon after me there will be some caliphs who will act according to what they know and will do what they have been commanded. Then after them there will come some caliphs who will act upon what they do not know and will do what they have not been commanded. So whoever rejects them will be free of blame, but whoever is pleased with them and follows them (his case will be different)."