It is narrated from Hazrat Abu Huraira (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Soon there will appear among my Ummah some Dajjal (imposters) and great liars who will narrate to you such ahadith which neither you nor your forefathers have heard. Beware of them and keep away from them, lest they put you into trial (fitnah).