Musnad Ahmad 32:1400

Muhammad ibn Mus'ab narrated to us, al-Awza'i narrated to us, from Rabi'ah ibn Abi 'Abd al-Rahman, from Anas ibn Malik, who said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "The Dajjal will emerge from the Jewish quarter of Isfahan, with him will be seventy thousand Jews, upon them are the *sijan* (cloaks/garments)."