Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates from Sayyiduna Abu Talhah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) forbade mixing two things together (to make nabidh).
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4698