Sahih Muslim Book 23, Hadith Number 4932.

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

Sa’id b. Jubair reported: I bear testimony to the fact that Ibn ‘Umar and Ibn ‘Abbas testified to the fact that Allah’s Messenger (may peace be upon him) forbade (the preparation) of Nabidh in gourd in vessel besmeared with pitch and hollow stump.