كتاب الأشربة
36
The Book of Drinks
(5)
Chapter: It is disliked to make Nabidh by mixing dried dates and raisins
(5)
باب كَرَاهَةِ انْتِبَاذِ التَّمْرِ وَالزَّبِيبِ مَخْلُوطَيْنِ ‏‏
Sahih Muslim 1986 b

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.

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ عَطَاءِ بْنِ أَبِي رَبَاحٍ، عَنْ جَابِرِ بْنِ عَبْدِ، اللَّهِ الأَنْصَارِيِّ عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم أَنَّهُ نَهَى أَنْ يُنْبَذَ التَّمْرُ وَالزَّبِيبُ جَمِيعًا وَنَهَى أَنْ يُنْبَذَ الرُّطَبُ وَالْبُسْرُ جَمِيعًا ‏.‏
Reference : Sahih Muslim 1986 b
In-book reference : Book 36, Hadith 20
USC-MSA web (English) reference : Book 23, Hadith 4897
  (deprecated numbering scheme)