Musnad Abu Ya'la al-Mawsili 118:64

Ishaq narrated to us, Sufyan narrated to us, from al-Zuhri, from Anas bin Malik, who said: The Messenger of Allah (may Allah bless him and grant him peace) forbade that *duba* (gourd) and *muzaffat* (pitch-coated vessels) be used for making *nabidh* (fermented drink) in them.