It is narrated from Sayyiduna Abu Shurayh (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The most insolent of people before Allah is a man who kills someone other than the killer (of his slain relative), or who seeks vengeance from the people of Islam for blood of the Jahiliyyah, and the one who makes his eyes see in a dream what they did not see."
Hadith Referenceالمعجم الكبير للطبراني / باب الهاء / 18718