"The Messenger of Allah ﷺ prohibited making Nabidh from unripend dates and fresh dates together.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى أَنْ يُنْبَذَ الْبُسْرُ وَالرُّطَبُ جَمِيعًا  

"The Prophet ﷺ prohibited mixing of unripe dates and dates, and mixing of raisins and dates (for making Nabidh), and he prohibited the jars that Nabidh is made in." He said: There are narrations on this topic from Anas, Jabir, Abu Qatadah, Ibn 'Abbas, Umm Salamah, and Ma'bad bin Ka'b from his mother.  

أَنَّ النَّبِيَّ ﷺ نَهَى عَنِ الْبُسْرِ وَالتَّمْرِ أَنْ يُخْلَطَ بَيْنَهُمَا وَنَهَى عَنِ الزَّبِيبِ وَالتَّمْرِ أَنْ يُخْلَطَ بَيْنَهُمَا وَنَهَى عَنِ الْجِرَارِ أَنْ يُنْبَذَ فِيهَا قَالَ وَفِي الْبَابِ عَنْ جَابِرٍ وَأَنَسٍ وَأَبِي قَتَادَةَ وَابْنِ عَبَّاسٍ وَأُمِّ سَلَمَةَ وَمَعْبَدِ بْنِ كَعْبٍ عَنْ أُمِّهِ