Musnad Ahmad 786:1

'Abd al-Razzaq narrated to us, Ma'mar informed us, from al-Zuhri, from 'Abd Allah ibn 'Ubayd Allah ibn Tha'labah al-Ansari, from 'Abd Allah ibn Yazid al-Ansari, from Mujammi' ibn Jariyah, who said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "The son of Mary shall surely kill the Dajjal at the gate of Ludd, or beside Ludd."