Sahih Muslim Book 23, Hadith Number 4955.

Chapter : It is forbidden to prepare Nabidh is varnished jar, gourd, green pitcher, and hollow stumps.

‘Abdullah b. ‘Amr reported that when Allah’s Messenger (may peace be upon him) forbade (the preparation) of Nabidh in vessels, they said all the people cannot (afford to have) them. He (the Holy Prophet) then granted them permission (to prepare) Nabidh in a green pitcher, but not in those besmeared with pitch.