It is narrated from Sayyiduna Abu Qatadah Ansari, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, forbade drinking nabidh made by mixing dates and grapes, and (also) drinking nabidh made by mixing unripe and ripe dates.
Imam Malik, may Allah have mercy on him, said: The scholars of our city have agreed upon this matter that it is disliked, because the Messenger of Allah, peace and blessings be upon him, forbade it.
Hadith Referenceموطا امام مالك رواية يحييٰ / كتاب الأشربة / 1583