The Book of Drinks (Kitab Al-Ashriba)
Muslim :: Book 23 : Hadith 4916
Abu Huraira reported that Allah's Apostle (may peace be upon him) said to the group of Abd al-Qais: I forbid you (to prepare Nabidh) in gourd. and green pitcher, hollow stump and varnished jar and the waterskin having its upper end cut, but (prepare it) in your small waterskin, and tie its mouth