Sahih Muslim Book 23, Hadith Number 4953.

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

Ibn Buraida, on the authority of his father, reported Allah’s Messenger (may peace be upon him) as saying: I had forbidden you (from the preparation of Nabidh) and drinking it in certain vessels, (but now you may do so if you like) for it is not vessels or a vessel that makes a thing lawful or unlawful. It is every intoxicant that is unlawful.