Do not prepare Nabidh by mixing nearly ripe dates and fresh dates together, and do not prepare Nabidh by mixing grapes and dates together, but prepare Nabidh from each (one of them) separately.
Sahih Muslim Book 36, Hadith 28
← Previous Hadith Allah's Messenger (ﷺ) prohibited us that we should mix dry dates with unripe dates or (mix) grapes with dry dates (and prepare Nabidh). He also said: He who amongst you drinks-the rest of the hadith is the same.

Sahih Muslim Book 36, Hadith 27 Next Hadith → This hadith has been narrated on the authority of Yahya b. Abu Kathir with the same chain of transmitters.

Sahih Muslim Book 36, Hadith 29