Musnad Ahmad 1034:142

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from ‘Abd al-Malik ibn ‘Umayr, from Rib‘i ibn Hirash, from Hudhayfah, from the Prophet, may Allah bless him and grant him peace, who said regarding the Dajjal: "Indeed, with him is water and fire. So his fire is cold water, and his water is fire. Therefore, do not perish." Abu Mas‘ud said: And I heard it from the Messenger of Allah, may Allah bless him and grant him peace.