It is disliked to make Nabidh by mixing dried dates and raisins Sahih Muslim 1986 b
Arabic hadith text
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 نَهَىأَنْ يُنْبَذَ التَّمْرُ وَالزَّبِيبُ جَمِيعًا
وَنَهَى أَنْ يُنْبَذَ الرُّطَبُ وَالْبُسْرُ جَمِيعًا .
Translation
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.