Musannaf Ibn Abi Shayba 37:368

Aswad ibn Amir narrated to us, he said: Hammad ibn Salamah narrated to us, from Khalid, from Abdullah ibn Shaqiq, from Abdullah ibn Suraqah, from Abu Ubaydah, he said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "There was no prophet after Noah except that he warned his people about the Dajjal, and I am warning you about him." The Messenger of Allah, peace and blessings of Allah be upon him, described him to us and said: "Some of those who have seen me or heard my speech will reach him." They said: "O Messenger of Allah, how will our hearts be on that day? Will they be like they are today?" He said: "Or better."