Sahih Muslim Book 23, Hadith Number 4938.
Chapter : It is forbidden to prepare Nabidh is varnished jar, gourd, green pitcher, and hollow stumps.
Ibn ‘Umar reported that a person came to him and said: Did Allah’s Apostle (may peace be upon him) forbid the preparation of Nabidh in a green pitcher (besmeared with pitch and) in varnished jar? He said: Yes.