The Book of Drinks
36/5. Chapter:
It is disliked to make Nabidh by mixing dried dates and raisins
Sahih Muslim
حَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ، حَدَّثَنَا ابْنُ عُلَيَّةَ، حَدَّثَنَا سَعِيدُ بْنُ يَزِيدَ أَبُو مَسْلَمَةَ، عَنْ أَبِي نَضْرَةَ، عَنْ أَبِي سَعِيدٍ، قَالَ نَهَانَا رَسُولُ اللَّهِ صلى الله عليه وسلم أَنْ نَخْلِطَ بَيْنَ الزَّبِيبِ وَالتَّمْرِ وَأَنْ نَخْلِطَ الْبُسْرَ وَالتَّمْرَ .
Abu Sa'id reported that Allah's Messenger (ﷺ) prohibited us to mix grapes and dry dates together and unripe dates and dry dates (to prepare Nabidh.
Reference : Sahih Muslim 1987bIn-book reference : Book 36, Hadith 24USC-MSA web (English) reference : Book 23, Hadith 4901