It is narrated from Sayyiduna Abu Shurayh Khuza'i, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: The greatest rebel against Allah Almighty is the one who kills someone who has not killed, or demands the blood of the days of ignorance from the people of Islam, or describes in his sleep what his eyes have not seen (i.e., relates false dreams).