Musannaf Ibn Abi Shayba 37:386

Abu Mu'awiyah narrated to us, from al-A'mash, from Khaythama, from Abdullah ibn Amr, who said: The Messiah, son of Mary, will descend. When the Dajjal sees him, he will melt as fat melts. He said: So he will kill the Dajjal, and the Jews will disperse from him, and they will be killed, until the stone will say: "O servant of Allah, the Muslim, this is a Jew, so come and kill him."