Do not mix fresh dates and dry dates, and grapes and fresh dates for preparing Nabidh.
Sahih Muslim Book 36, Hadith 21
← Previous Hadith 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.

Sahih Muslim Book 36, Hadith 20 Next Hadith → Jabir b. Abdullah al-Ansari reported that Allah's Messenger (ﷺ) Prohibited the preparation of Nabidh by mixing grapes and fresh dates. and he forbade the preparation of Nabidh by mixing unripe dates with fresh dates.

Sahih Muslim Book 36, Hadith 22