Sayyiduna al-Faltan bin Asim (may Allah be pleased with him) narrates: We came to the Prophet (peace and blessings be upon him) with those of the Bedouins who came to him, and we sat waiting for him. He came out with signs of anger on his face, and sat for a long time without speaking. Then he said: "I came out to you when the Night of Decree and the Messiah of misguidance (the misleading Messiah, the Dajjal) had been made clear to me, and I came out to make it clear to you and give you glad tidings of it. Then at the door of the mosque I found two men quarrelling, with Satan along with them, and I intervened between them; because of this it was made to slip from my memory and was snatched from me. But I will certainly give you some hint of it."
Hadith Referenceالمعجم الكبير للطبراني / باب الفاء / 15948