Musannaf Ibn Abi Shayba 37:615

Waki’ narrated to us, from Isma’il, from Qays, that a man was walking with Hudhayfah toward the Euphrates. He said, "How will you be when you go out and do not taste a drop of it?" He said, "We said, 'Do you think that?'" He said, "I do not think it, but I am certain of it."