(5) باب كَرَاهَةِ انْتِبَاذِ التَّمْرِ وَالزَّبِيبِ مَخْلُوطَيْنِ
Jabir b. 'Abdullah al-Ansari reported that Allah's Messenger (ﷺ) prohibited the (preparation of) Nabidh by mixing together fresh dates and grapes, and he prohibited the preparation of Nabidh by mixing the fresh dates and unripe dates together.
Reference: Sahih Muslim 1986 b
In-book reference: Book 36, Hadith 20
USC-MSA web (English) reference(deprecated numbering scheme): Book 23, Hadith 4897