Narrated Al-Mughira bin Shu'ba:

Nobody asked the Prophet as many questions as I asked regarding Ad-Dajjal. The Prophet ﷺ said to me, "What worries you about him?" I said, "Because the people say that he will have a mountain of bread and a river of water with him (i.e. he will have abundance of food and water)" The Prophet ﷺ said, "Nay, he is too mean to be allowed such a thing by Allah"' (but it is only to test mankind whether they believe in Allah or in Ad-Dajjal.)

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، حَدَّثَنَا إِسْمَاعِيلُ، حَدَّثَنِي قَيْسٌ، قَالَ قَالَ لِي الْمُغِيرَةُ بْنُ شُعْبَةَ مَا سَأَلَ أَحَدٌ النَّبِيَّ ﷺ عَنِ الدَّجَّالِ مَا سَأَلْتُهُ وَإِنَّهُ قَالَ لِي " مَا يَضُرُّكَ مِنْهُ ". قُلْتُ لأَنَّهُمْ يَقُولُونَ إِنَّ مَعَهُ جَبَلَ خُبْزٍ وَنَهَرَ مَاءٍ. قَالَ " هُوَ أَهْوَنُ عَلَى اللَّهِ مِنْ ذَلِكَ ".