It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: "When Allah, the Exalted, will gather the first and the last on the Day of Resurrection, a flag will be raised for every deceiver, and it will be announced that this is the deception of so-and-so, son of so-and-so."