Musannaf Ibn Abi Shayba 37:397

Husayn ibn Ali narrated to us, from Za'idah, from Abd al-Malik, from Rib'i ibn Hirash, who said: Uqbah ibn Amr said to Hudhayfah, "Will you not narrate to us what you heard the Messenger of Allah, may Allah bless him and grant him peace, say?" He said, "Yes, I heard him saying: 'Indeed, with the Dajjal, when he emerges, there is water and fire. As for that which the people see as water, it is fire that burns. And as for that which the people see as fire, it is sweet, cold water. So whoever among you reaches that, let him fall into that which he sees as fire, for it is sweet, cold water.'" Uqbah said, "And I heard him saying that."