Musnad Ahmad 626:71

Yahya narrated to us, from Isma'il, Qays narrated to me, he said: Al-Mughirah ibn Shu'bah said to me: No one asked the Messenger of Allah, peace and blessings of Allah be upon him, about the Dajjal more than I asked him. And he said to me: "What harm will he do to you?" I said: They say that he has a mountain of bread and a river of water with him. He said: "He is more insignificant to Allah than that."