Majma al-Zawaid 12539 — Reports on the Dajjal

Sayyiduna al-Faltan bin Asim (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "I was shown the Night of Decree (Laylat al-Qadr), then I was made to forget it. And I saw the Dajjal. Then two men were quarrelling at such-and-such a place, and I began to stop the fight between them, and meanwhile that thing was made to slip from my memory. So seek the Night of Decree in the last ten nights. As for the Dajjal, he is a man with a bright forehead (i.e. the hair at the front of his head will have receded), his left eye will be wiped out, his neck will be broad, and he will resemble Abd al-Uzza bin Qatan."
Al-Bazzar recorded it, and its narrators are thiqat (trustworthy). A hadith of Sayyiduna Abu Hurayrah (may Allah be pleased with him) similar to it has already passed.