Anas b. Malik reported that Messenger of Allah ﷺ forbade the preparation of Nabidh in gourd or varnished jar. (Using translation from Muslim 1992a)
أَنَّهُ أَخْبَرَهُ أَنَّ رَسُولَ اللهِ ﷺ «نَهَى عَنِ الدُّبَّاءِ وَالْمُزَفَّتِ أَنْ يُنْبَذَ فِيهِمَا»