Sahih Muslim Book 23, Hadith Number 4940.

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

Ibrahim b. Maisarah reported that he heard Tawus as saying: I was sitting with Ibn ‘Umar when a man came to him, and said: Did Allah’s Messenger (may peace be upon him) forbid the preparation of Nabidh in a green pitcher (besmeared with pitch), in varnished jar and in gourd? Thereupon he said: Yes.