From Sahih Muslim (Hadith 5624):
Mughira b. Shu'ba reported that none else had asked more questions from Allah's Messenger (ﷺ) about the Dajjal than I, but he simply said in a slight mood):O, myson, why are you worried because of him? He will not harm you. I said: The people think that he would have with him rivers of water and mountains of bread, whereupon he said: He would be more insignificant in the sight of Allah than all these things (belonging to him)
Reference: Muslim 5624